When the war began we were not inferior in aerodynamical knowledge to the Germans or even to the French. Speaking at the Aeronautical Society in February 1914, Brigadier-General Henderson said, 'If any one wants to know which country has the fastest aeroplane in the world—it is Great Britain'. This was the S.E. 4, a forerunner of the more famous S.E. 5. If more powerful engines had been installed in the British machines of 1914, they would have given us a speed that the enemy could not touch. But we were preoccupied with the needs of reconnaissance, and we cared little about speed. In the early part of the war we hampered our aeroplanes with fitments, cameras, and instruments, which were attached as protuberances to the streamlined body of the aeroplane and made speed impossible. In the Flying Corps itself an aeroplane thus fitted was commonly called a Christmas tree. We thought too little of power in the engine, a mistake not quickly remedied, seeing that the time which must elapse between the ordering of an engine and its production in quantity is, even under pressure, a period of about twelve months. The engines available at the outbreak of the war for British military aircraft were the seventy horse-power Renault and the eighty horse-power Gnome. In Germany airship engines of two hundred horse-power and more, easily modified for use in aeroplanes, were available in quantity some time before the war. For military machines we were satisfied with smaller engines, which worked well, and enabled our aeroplanes to accomplish all that at that time seemed likely to be asked of them. If we were wrong we were content to wait for experience to correct us.

The problems presented to the Naval Wing of the Royal Flying Corps were widely different from those which engrossed the attention of the soldiers. The difference, to put it briefly, was the difference between defence and attack. The British army does not fight at home, and this privilege it enjoys by virtue of the constant vigilance of the British navy. The ultimate business of the British navy, though it visits all the seas of the world, is home defence. Yet that defence cannot be effectively carried out at home, and when we are at war our frontiers are the enemy coasts and our best defence is attack. This old established doctrine of naval warfare is the orthodox doctrine also of aerial warfare. A mobile force confined to one place by losing its mobility loses most of its virtue. The fencer who does nothing but parry can never win a bout, and in the end will fail to parry. The recognition of this doctrine in relation to aerial warfare was gradual. When the Royal Flying Corps was established and the question of the defence of our coasts by aircraft first came under discussion, our available airships, aeroplanes, and seaplanes, though their development had been amazingly rapid, were weapons without much power of offence. The main thing was to give them a chance of proving and increasing their utility. In October 1912 the Admiralty decided to establish a chain of seaplane and airship stations on the east coast of Great Britain. The earliest of these stations, after Eastchurch, was the seaplane station of the Isle of Grain, commissioned in December 1912, with Lieutenant J. W. Seddon as officer in command. This was followed, in the first half of 1913, by the establishment of similar stations at Calshot, Felixstowe, Yarmouth, and Cromarty. H.M.S. Hermes, in succession to H.M.S. Actaeon, was commissioned on the 7th of May 1913 as headquarters of the Naval Wing, and her commanding officer, Captain G. W. Vivian, R.N., was given charge of all coastal air stations. For airships a station at Hoo on the Medway was established with two double sheds of the largest size; it was called Kingsnorth, and was completed in April 1914, by which time all military airships had been handed over to the Admiralty. All the seaplane stations were in a sense offshoots of Eastchurch, which continued to be the principal naval flying school. Except for some valuable experimental work, not very much was done before the war at the seaplane coast stations. The supply of machines was small, and when the bare needs of Eastchurch and Grain had been met, not enough remained for the outfit of the other stations. Nevertheless the zeal of the naval pilots, encouraged and supported by the First Lord of the Admiralty (Mr. Winston Churchill) and by the Director of the Air Department (Captain Murray Sueter), wrought good progress in a short time. The first successful seaplane was produced at Eastchurch, as has been told, in March 1912. Just before the war, the Naval Wing of the Royal Flying Corps had in its possession fifty-two seaplanes, of which twenty-six were in flying condition, and further, had forty-six seaplanes on order. Those who know how difficult it is to get new things done will easily recognize that this measure of progress, though perhaps not very impressive numerically, could never have been achieved save by indomitable perseverance and effort. Sailors are accustomed to work hard and cheerfully under adverse conditions.

In the naval manœuvres of July 1913 the Hermes, carrying two seaplanes, which were flown from its launching platform, operated with the fleet. Four seaplanes and one aeroplane from Yarmouth, three seaplanes from Leven, and three from Cromarty, also bore a part. The weather was not good, and the manœuvres proved that the smaller type of seaplane was useless for work in the North Sea. Any attempt to get these machines off the water in a North Sea 'lop' infallibly led to their destruction. Further, it was found necessary for the safety of pilots that every machine should be fitted with wireless telegraphy. A machine fitted with folding wings was flown from the Hermes by Commander Samson, and was found to be the best and most manageable type.

In a minute dated the 26th of October 1913 the First Lord of the Admiralty sketches a policy and a programme for the ensuing years. Aeroplanes and seaplanes, he remarks, are needed by the navy for oversea work and for home work. He recommends three new types of machine: first, an oversea fighting seaplane, to operate from a ship as base; next, a scouting seaplane, to work with the fleet at sea; and last, a home-service fighting aeroplane, to repel enemy aircraft when they attack the vulnerable points of our island, and to carry out patrol duties along the coast. The events of the war have given historic interest to all forecasts prepared before the war. Mr. Churchill's minute is naturally much concerned with the Zeppelin, which should be attacked, he says, by an aeroplane descending on it obliquely from above, and discharging a series of small bombs or fireballs, at rapid intervals, so that a string of them, more than a hundred yards in length, would be drawn like a whiplash across the gas-bag. This is a near anticipation of the method by which Flight Sub-Lieutenant R. A. J. Warneford brought down a Zeppelin in flames between Ghent and Brussels on the 7th of June 1915. The immense improvements in construction which were wrought by the war may be measured by Mr. Churchill's specifications for the rate of climb of the two-seater aeroplanes and seaplanes—namely, three thousand feet in twenty minutes. When he drafted his scheme that was a good rate of climb; before the war ended there were machines on the flying fronts which could climb three thousand feet in two minutes.

Under the direction of the Air Department much attention was paid by pilots in the Naval Air Service to experimental work and the diverse uses of aeroplanes. So early as January 1912 Lieutenant H. A. Williamson, R.N., a submarine officer who had gained the Royal Aero Club certificate, submitted to the Admiralty a paper which anticipated some later successes. He advocated the use of aeroplanes operating from a parent ship for the detection of submarines, and showed how bombs exploding twenty feet below the surface might be used to destroy these craft. The practical introduction of depth charges was delayed for years by the difficulty of devising the delicate and accurate mechanism which uses the pressure of the water to explode the bomb at a given depth. But before the war ended the detection of submarines from the air and the use by surface craft of depth charges for destroying them had been brought to such a degree of efficiency that the submarine menace was countered and held. The submarine learned to fear aircraft as the birds of the thicket fear the hawk. It would be tedious to attempt to describe the long series of experiments by which this result was at last attained. The earliest attempts to detect submarines from the air were made with seaplanes at Harwich in June 1912, and at Rosyth in September of the same year. The shallow tidal waters were found to be very opaque, but in clear weather a periscope could be seen from a considerable distance, and in misty weather the seaplane, when it sighted a submarine in diving trim on the surface, could swoop down and drop a bomb before the submarine could dive.

Progress in bomb-dropping was not less. Nothing is easier than to drop a detonating bomb, with good intentions, over the side of an aeroplane; the difficulty of hitting the mark lay in determining the flight of the bomb and in devising an efficient dropping gear. To drop a weight from a rapidly moving aeroplane so that it shall hit a particular spot on the surface of the earth is not an easy affair; the pace and direction of the machine, its height from the ground, the shape and air resistance of the bomb, must all be accurately known. They cannot be calculated in the air; success in bomb-dropping depends on the designing of a gear for dropping and sighting which shall perform these calculations automatically. Very early in the history of aviation dummy bombs had been dropped, for spectacular purposes, at targets marked on the ground. The designing of an efficient dropping gear and the study of the flight of bombs were taken up by the Air Department of the Admiralty from the very first. Under their direction a very valuable series of experiments was carried out at Eastchurch, at first by Commander Samson, and later by Lieutenant R. H. Clark Hall, a naval gunnery lieutenant, who had learnt to fly, and was appointed in March 1913 for armament duties with the Royal Naval Air Service.

The whole subject was new. No one could tell exactly how the flight of an aeroplane would be affected when the weight of the machine should be suddenly lightened by the release of a large bomb; no one could be sure that a powerful explosion on the surface of the sea would not affect the machine flying at a moderate height above it. In 1912 a dummy hundred-pound bomb was dropped from a Short pusher biplane flown by Commander Samson, who was surprised and pleased to find that the effect on the flight of the machine was hardly noticeable. In December 1913 experiments were carried out to determine the lowest height at which bombs could be safely dropped from an aeroplane. No heavy bombs were available, but floating charges of various weights, from 2-1/4 pounds to 40 pounds, were fired electrically from a destroyer, while Maurice Farman seaplanes flew at various heights directly above the explosion. Again the effect upon the machines was less than had been anticipated. The general conclusion was that an aeroplane flying at a height of 350 feet or more could drop a hundred-pound bomb, containing forty pounds of high explosive, without danger from the air disturbance caused by the explosion.

A good war machine aims at combining the safety of the operator with a high degree of danger to the victim. The second of these requirements was the more difficult of fulfilment, and was the subject of many experiments. Until the war took the measure of their powers, the German Zeppelins preoccupied attention, and were regarded as the most important targets for aerial attack. The towing of an explosive grapnel, which, suspended from an aeroplane, should make contact with the side of an airship, was the subject of experiments at Eastchurch. This idea, though nothing occurred to prove it impracticable, was soon abandoned in favour of simpler methods—the dropping, for instance, of a series of light bombs with sensitive fuses, or the firing of Hales grenades from an ordinary service rifle. To make these effective, it was essential that they should detonate on contact with ordinary balloon fabric, and preliminary experiments were carried out at the Cotton Powder Company's works at Faversham in October 1913.

When two sheets of fabric, stitched on frames to represent the two skins of a rigid airship, were hit by a grenade of the naval type with a four-ounce charge, it was found that the front sheet was blown to shreds and the rear sheet had a hole about half a foot in diameter blown in it. Later experiments at Farnborough against balloons filled with hydrogen, and made to resemble as nearly as possible a section of a rigid airship, were completely successful. Firing at floating targets, and at small target balloons released from the aeroplanes, was practised at Eastchurch. It was found that, with no burst or splash to indicate where the shot hit, this practice was unprofitable. The effective use of small-bore fire-arms against aircraft was made possible by two inventions, produced under the stress of the war itself, that is to say, of the tracer bullet, which leaves behind it in the air a visible track of its flight, and of the incendiary bullet, which sets fire to anything inflammable that it hits.

At the outbreak of war the only effective weapon for attacking the Zeppelin from the air was the Hales grenade. Of two hundred of these which had been manufactured for the use of the Naval Wing many had been used in experiment; the remainder were hastily distributed by Lieutenant Clark Hall among the seaplane stations on the East Coast.

The Naval Air Service experimented also with the mounting of machine-guns on aeroplanes. On this matter Lieutenant Clark Hall, early in 1914, reported as follows:

'Machine-gun aeroplanes are (or will be) required to drive off enemy machines approaching our ports with the intention of obtaining information or attacking with bombs our magazines, oil tanks, or dockyards.... I do not think the present state of foreign seaplanes for attack or scouting over our home ports is such as to make the question extremely urgent, but I would strongly advocate having by the end of 1914 at each of our home ports and important bases at least two aeroplanes mounting machine-guns for the sole purpose of beating off or destroying attacking or scouting enemy aeroplanes.'

From what has been said it is evident that the Naval Wing of the Royal Flying Corps paid more attention than was paid by the Military Wing to the use of the aeroplane as a fighting machine. This difference naturally followed from the diverse tasks to be performed by the two branches of the air service. The Military Wing, small as it was, knew that it would be entrusted with the immense task of scouting for the expeditionary force, and that its business would be rather to avoid than to seek battle in the air. The Naval Wing, being entrusted first of all with the defence of the coast, aimed at doing something more than observing the movements of an attacking enemy. Thus in bomb-dropping and in machine-gunnery the Naval Wing was more advanced than the Military Wing. Both wings were active and alive with experiment, so that after a while experimental work which had originally been assigned to the factory and the Central Flying School was transferred to the Wing Headquarters. During the year 1913 wireless experiments were discontinued at the Central Flying School, and were concentrated at the Military Wing. There was a valuable measure of co-operation between the two wings. This co-operation was conspicuous, as has been seen, in wireless telegraphy, which was first applied to aircraft at Farnborough. The lighter-than-air craft, which belonged first to the army and then to the navy, were a valuable link between the two wings. Each wing was ready to learn from the other. In January 1914, by permission of the Admiralty, officers of the Military Wing witnessed the experiments made by the Naval Wing with bomb-dropping gear. If the Naval Wing in some respects made more material progress, it should be remembered that they received more material support. They were encouraged by the indefatigable Director of the Air Department, and received from the Admiralty larger grants of money than came to the Military Wing. No doubt a certain spirit of rivalry made itself felt. Service loyalty is a strong passion, and the main tendency, before the war, was for the two branches of the air service to drift apart, and to attach themselves closely, the one to the army, the other to the navy.

At the end of 1913 H.M.S. Hermes was paid off, and the headquarters of the Naval Wing was transferred to the Central Air Office, Sheerness. All ranks and ratings hitherto borne on the books of the Hermes were transferred to the books of this newly created office, and Captain F. R. Scarlett, R.N., late second in command of the Hermes, was placed in charge, with the title of Inspecting Captain of Aircraft. He was responsible to the Director of the Air Department, and, in regard to aircraft carried on ships afloat, or operating with the fleet, was also directly responsible to the Commander-in-Chief of the Home Fleets. In some respects the progress made by the Naval Wing of the Royal Flying Corps during 1913 had been continuous and satisfactory. Training had been carried on regularly at the Central Flying School, at Eastchurch, and, for airship work, at Farnborough. By the end of the year there were about a hundred trained pilots. Stations for guarding the coast had been established in five places other than Eastchurch, and arrangements were in hand for doubling this number. The record of miles flown during the year by naval aeroplanes and seaplanes was no less than 131,081 miles. Wireless telegraphy had made a great advance; transmitting sets were in course of being fitted to all seaplanes, and the reception of messages in aeroplanes had been experimentally obtained. Systematic bomb-dropping had been practised with growing accuracy and success. A system for transmitting meteorological charts from the Admiralty, so that air stations and aircraft in the air should receive frequent statements of the weather conditions, had been brought into working order.

On the other hand, all these advances were experimental in character, and no attempt had been made to equip the force completely for the needs of war. In this matter there is perhaps something to be said on both sides. Where munitions are improving every year, too soon is almost as bad as too late. In fact, at the beginning of the war the Naval Air Service had only two aeroplanes and one airship fitted with machine-guns. Of the aeroplanes, one carried a Maxim gun, another a Lewis gun, loaned to the Admiralty by Colonel Lucas, C.B., of Hobland Hall, Yarmouth. No. 3 Airship (the Astra-Torres) was fitted with a Hotchkiss gun. The offensive weapon carried by other machines was a rifle. The various air stations were not liberally supplied with munitions of war. The Isle of Grain had four Hales hand-grenades. Hendon (the station for the defence of London) and Felixstowe had twelve each. The other stations were supplied in a like proportion, except Eastchurch, which had a hundred and fifty hand-grenades, forty-two rifle grenades, twenty-six twenty-pound bombs, and a Maxim gun. When the war broke out, a number of six-inch shells were fitted with tail vanes and converted into bombs.

On the 1st of July 1914 the separate existence of the naval air force was officially recognized. The Naval Wing of the Royal Flying Corps became the Royal Naval Air Service, with a constitution of its own. The naval flying school at Eastchurch and the naval air stations on the coast, together with all aircraft employed for naval purposes, were grouped under the administration of the Air Department of the Admiralty and the Central Air Office. So, for a time, the national air force was broken in two. The army and the navy had been willing enough to co-operate, but the habits of life and thought of a soldier and a sailor are incurably different. Moreover, the tasks of the two wings, as has been said, were distinct, and neither wing was very well able to appreciate the business of the other. The Naval Wing had not the transport or equipment to operate at a distance from the sea, and, on the other hand, was inclined to insist that all military aeroplanes, when used for coast defence, should be placed under naval command. The Military Wing was preoccupied with continental geography and with strategical problems. The two attitudes and two methods lent a certain richness and diversity to our air operations in the war. When Commander Samson established himself at Dunkirk during the first year of the war, his variegated activities bore very little resemblance to the operations of the military squadrons on the battle-front.

The review of the fleet by the King, at Spithead, from the 18th to the 22nd of July 1914, gave to the Royal Naval Air Service an opportunity to demonstrate its use in connexion with naval operations. Most of the available naval aircraft were concentrated at Portsmouth, Weymouth, and Calshot to take part in the review. On the 20th of July an organized flight of seventeen seaplanes, and two flights of aeroplanes in formation headed by Commander Samson, manœuvred over the fleet. This formation flying had been practised at Eastchurch before the review. Three airships from Farnborough and one from Kingsnorth also took part in the demonstration. Within a few weeks all were to take part in the operations of war. The aeroplanes and seaplanes flew low over the fleet. Some naval officers, who had previously seen little of aircraft, expressed the opinion that the planes flew low because they could not fly high, and that their performance was an acrobatic exhibition, useless for the purposes of war. These and other doubters were soon converted by the war.

When the review was over, the seaplanes and airships returned to their several bases. The flights of aeroplanes, under Commander Samson, went on tour, first to Dorchester, where they stayed four or five days, and thence to the Central Flying School. They had been there only a few hours when they received urgent orders to return to Eastchurch, where they arrived on the 27th of July. On the same day seaplanes from other stations were assembled at Grain Island, Felixstowe, and Yarmouth, to be ready to patrol the coast in the event of war. These precautionary orders, and the orders given by the Admiralty on the previous day, arresting the dispersal of the British fleet, were among the first orders of the war. On the 29th of July instructions were issued to the Naval Air Service that the duties of scouting and patrol were to be secondary to the protection of the country against hostile aircraft. All machines were to be kept tuned up and ready for action. On the 30th of July the Army Council agreed to send No. 4 Squadron of aeroplanes to reinforce the naval machines at Eastchurch. Eastchurch, during the months before the war, had been active in rehearsal; fighting in the air had been practised, and trial raids, over Chatham and the neighbouring magazines, had been carried out, two aeroplanes attacking and six or eight forming a defensive screen. Work of this kind had knit together the Eastchurch unit and had fitted it for active service abroad. In the meantime, at the outbreak of the war, attacks by German aircraft were expected on points of military and naval importance.

Germany was known to possess eleven rigid airships, and was believed to have others under construction. Our most authoritative knowledge of the state of German aviation was derived from a series of competitions held in Germany from the 17th to the 25th of May 1914, and called 'The Prince Henry Circuit'. These were witnessed by Captain W. Henderson, R.N., as naval attaché, and by Lieutenant-Colonel the Hon. A. Russell, as military attaché. The witnesses pay tribute to the skill and dash of the German flying officers and to the spirit of the flying battalions. The officers they found to be fine-drawn, lean, determined-looking youngsters, unlike the well-known heavy Teutonic type. Owing partly to the monotony of German regimental life there was great competition, they were told, to enter the flying service, eight hundred candidates having presented themselves for forty vacancies. In 'The Prince Henry Circuit', a cross-country flight of more than a thousand miles, to be completed in six days, twenty-six aeroplanes started. The weather was stormy, and there were many accidents; one pilot and three observers were killed. These were regarded as having lost their lives in action, and there was no interruption of the programme. Among the best of the many machines that competed were the military L.V.G. (or Luft-Verkehrs-Gesellschaft) biplane, which won the chief prizes, the A.E.G. (or Allgemeine Elektrizitäts-Gesellschaft) biplane, the Albatross, and the Aviatik. On the whole, said our witnesses, the Germans had not progressed fast or far in aviation. They were still learning to fly; they were seeking for the best type of machine; and had given no serious attention, as yet, to the question of battle in the air. The test that was to compare the British and German air forces was now at hand.

CHAPTER VI

THE WAR: THE ROYAL FLYING CORPS FROM MONS TO YPRES

The German war of the twentieth century, like the German wars of the eighteenth and nineteenth centuries, was carefully planned and prepared by the military rulers of Prussia. To elucidate its origins and causes will be the work of many long years. Yet enough is known to make it certain that this last and greatest war conforms to the old design. The Prussians have always been proud of their doctrine of war, and have explained it to the world with perfect frankness. War has always been regarded by them as the great engine of national progress. By war they united the peoples of Germany; by war they hoped to gain for the peoples of Germany an acknowledged supremacy in the civilized world. These peoples had received unity at the hands of Prussia, and though they did not like Prussia, they believed enthusiastically in Prussian strength and Prussian wisdom. If Prussia led them to war, they were encouraged to think that the war would be unerringly designed to increase their power and prosperity. Yet many of them would have shrunk from naked assault and robbery; and Prussia, to conciliate these, invented the fable of the war of defence. That a sudden attack on her neighbours, delivered by Germany in time of peace, is a strictly defensive act has often been explained by German military and political writers, never perhaps more clearly than in a secret official report, drawn up at Berlin in the spring of 1913, on the strengthening of the German army. A copy of this report fell into the hands of the French.

'The people,' it says, 'must be accustomed to think that an offensive war on our part is a necessity.... We must act with prudence in order to arouse no suspicion.'

The fable of the war of defence was helped out with the fable of encirclement. Germany, being situated in the midst of Europe, had many neighbours, most of whom had more reason to fear her than to like her. Any exhibition of goodwill between these neighbours was treated by German statesmen, for years before the war, as a covert act of hostility to Germany, amply justifying reprisals. The treaty between France and Russia, wholly defensive in character, the expression of goodwill between France and England, inspired in part by fears of the restless ambitions of Germany, though both were intended to guarantee the existing state of things, were odious to Berlin. The peace of Europe hung by a thread.

On Sunday, the 28th of June 1914, the Archduke Francis Ferdinand, heir to the throne of Austria, and his wife, the Duchess of Hohenberg, paid a visit to Serajevo, the capital of Bosnia, and were there murdered by Bosnian assassins. It has not been proved that Germany had any part in the murder, but she was quite willing to take advantage of it. The Kiel canal, joining the Baltic with the North Sea had just been widened to admit the largest battleships, and the German army had just been raised to an unexampled strength. The gun was loaded and pointed; if it was allowed to be fired by accident the military rulers of Germany were much to blame. They were not in the habit of trusting any part of their plans to accident. But the excitement caused by the Archduke's murder was allowed to die away, and an uneasy calm succeeded. On the 23rd of July the Austrian Government, alleging that the Serajevo assassinations had been planned in Belgrade, presented to Serbia, with the declared approval of Germany, an ultimatum, containing demands of so extreme a character that the acceptance of them would have meant the abandonment by Serbia of her national independence. Serbia appealed to Russia, and, acting on Russia's advice, accepted all the demands except two. These two, which involved the appointment of Austro-Hungarian delegates to assist in administering the internal affairs of Serbia, were not bluntly rejected; Serbia asked that they should be referred to the Hague Tribunal. Austria replied by withdrawing her minister, declaring war upon Serbia, and bombarding Belgrade. This action was bound to involve Russia, who could not stand by and see the Slavonic States of southern Europe destroyed and annexed. But the Russian Government, along with the Governments of France, Great Britain, and Italy, did their utmost to preserve the peace. They suggested mediation and a conference of the Powers. Germany alone refused. Alleging that Russia had already mobilized her army, she decreed a state of war, and on Saturday, the 1st of August, declared war upon Russia. France by her treaty with Russia would shortly have become involved; but the German Government would not wait for her. They judged it all-important to gain a military success at the very start of the war, and to this everything had to give way. They declared war on France, and massed armies along the frontier between Liége and Luxembourg, with the intention of forcing a passage through Belgium. England, who was one of the guarantors of the integrity of Belgium, was thus involved. At 11.0 p.m. on the 4th of August, Great Britain declared war on Germany, and the World War had begun.

The events of the twelve days from the 23rd of July to the 4th of August, when they shall be set forth in detail, will furnish volumes of history. Those who study them minutely are in some danger of failing to see the wood for the trees. The attitude of the nations was made clear enough during these days. When Austria issued her ultimatum, many people in England thought of it as a portent of renewed distant trouble in the Balkans, to be quickly begun and soon ended. It was not so regarded in Germany. The people of Germany, though they were not in the confidence of their Government, were sufficiently familiar with its mode of operation to recognize the challenge to Serbia for what it was, Germany's chosen occasion for her great war. The citizens not only of Berlin, but of the Rhineland, and of little northern towns on the Kiel canal, went mad with joy; there was shouting and song and public festivity. Meantime in England, as the truth dawned, there were hushed voices and an intense solemnity. The day had come, and no one doubted the severity of the ordeal. Yet neither did any one, except an unhappy few who had been nursed in folly and illusion, doubt the necessity of taking up the challenge. The country was united. Not only was the safety and existence of the British Commonwealth involved, but the great principle of civilization, difficult to name, but perhaps best called by the appealing name of decency, which bids man remember that he is frail and that it behoves him to be considerate and pitiful and sincere, had been flouted by the arrogant military rulers of Germany. Great Britain had a navy; her army and her air force, for the purposes of a great European war, were yet to make. The motive that was to supply her with millions of volunteers was not only patriotism, though patriotism was strong, but a sense that her cause, in this war, was the cause of humanity. There are many who will gladly fight to raise their country and people in power and prosperity above other countries and other peoples. There are many also among English-speaking peoples who are unwilling to fight for any such end. But they are fighters, and they will fight to protect the weak and to assert the right. They are a reserve worth enlisting in any army; it was by their help that the opponents of Germany attained to a conquering strength. The systematic cruelties of Germany, inflicted by order on the helpless populations of Serbia and Belgium and northern France, are not matter of controversy; they have been proved by many extant military documents and by the testimony of many living witnesses. They were designed to reduce whole peoples to a state of impotent terror, beneath the level of humanity. The apology made for them, that by shortening resistance to the inevitable they were in effect merciful, is a blasphemous apology, which puts Germany in the place of the Almighty. The effect anticipated did not follow. The system of terrorism hardened and prolonged resistance; it launched against Germany the chivalry of the world; it created for use against Germany the chivalry of the air; and it left Germany unhonoured in her ultimate downfall.

The German plan of campaign, it was rightly believed, was a swift invasion and disablement of France, to be followed by more prolonged operations against Russia. By this plan the German army was to reach Paris on the fortieth day after mobilization. There was no promise that Great Britain would help France, but the attitude of Germany had long been so threatening that the General Staffs of the two countries had taken counsel with each other concerning the best manner of employing the British forces in the event of common resistance to German aggression. It had been provisionally agreed that the British army should be concentrated on the left flank of the French army, in the area between Avesnes and Le Cateau, but this agreement was based on the assumption that the two armies would be mobilized simultaneously. When the principal British Ministers and the leading members of the naval and military staffs assembled at Downing street on the 5th and 6th of August, we were already behindhand, and the whole question of the employment and disposition of the expeditionary force had to be reopened. It was expected by some soldiers and some civilians that the little British army would be landed at a point on the coast of France or Belgium whence it could strike at the flank of the German invaders. The strategic advantages of that idea had to yield to the enormous importance of giving moral and material support to our Allies by fighting at their side; moreover, there could be no assurance that the coast of Belgium would not fall into the hands of the Germans at a very early stage in the campaign. Accordingly, it was agreed to ship our army to France, and to leave the manner of its employment to be settled in concert with the French.

The original British Expeditionary Force, under the command of Field-Marshal Sir John French, began to embark on the 9th of August; by the 20th its concentration in a pear-shaped area between Maubeuge and Le Cateau was complete. It consisted of the First Army Corps, under Lieutenant-General Sir Douglas Haig; the Second Army Corps, under Lieutenant-General Sir James Grierson, who died soon after landing in France and was succeeded by General Sir Horace Smith-Dorrien; and the Cavalry Division, under Major-General E. H. H. Allenby. The Germans made no attempt to interfere with the transport of the expeditionary force from England to France. They had many other things to think of, and there is evidence to show that they viewed with satisfaction the placing of that admirable little force in a situation where they hoped that they could cut it off and annihilate it. That they were disappointed in this hope was due not a little to the activity and efficiency of the newest arm, numbering about a thousand, all told, the Royal Flying Corps.

The Royal Flying Corps took the field under the command of Brigadier-General Sir David Henderson. It consisted of Headquarters, Aeroplane Squadrons Nos. 2, 3, 4, and 5, and an Aircraft Park. Fairly complete arrangements, thought out in detail, had been made some months earlier for its mobilization. Each squadron was to mobilize at its peace station, and was to be ready to move on the fourth day. On that day the aeroplanes were to move, by air, first to Dover, and thence, on the sixth day, to the field base in the theatre of war. The horses, horse-vehicles, and motor-bicycles, together with a certain amount of baggage and supplies, were to travel by rail, and the mechanical transport and trailers by road, to the appointed port of embarkation, there to be shipped for the overseas base. The Aircraft Park, numbering twelve officers and a hundred and sixty-two other ranks, with four motor-cycles and twenty-four aeroplanes in cases, were to leave Farnborough for Avonmouth on the seventh day. Instructions were issued naming the hour and place of departure of the various trains, with detailed orders as to machines, personnel, transport, and petrol. On the second day of mobilization a detachment from No. 6 Squadron was to proceed to Dover, there to make ready a landing-ground for the other squadrons, and to provide for replenishment of fuel and minor repairs to aircraft. Squadron commanders were urged to work out all necessary arrangements for the journey. How carefully they did this is shown by some of the entries in the squadron diaries. In the diary of No. 2 Squadron (Major C. J. Burke's) a list is given of the articles that were to be carried on each of the machines flying over to France. Besides revolvers, glasses, a spare pair of goggles, and a roll of tools, pilots were ordered to carry with them a water-bottle containing boiled water, a small stove, and, in the haversack, biscuits, cold meat, a piece of chocolate, and a packet of soup-making material.

The programme for mobilization was, in the main, successfully carried out. The headquarters of the Royal Flying Corps left Farnborough for Southampton on the night of the 11th of August, their motor transport having gone before. They embarked at Southampton, with their horses, and reached Amiens on the morning of the 13th. The movements of the Aircraft Park, though it was the last unit to leave England, may be next recorded, because it was in effect the travelling base of the squadrons. The personnel and equipment were entrained at Farnborough during the evening of Saturday, the 15th of August, and travelled to Avonmouth. Of the twenty machines allotted to them only four, all Sopwith Tabloids, were actually taken over in cases. Of the other sixteen (nine B.E. 2's, one B.E. 2 c, three B.E. 8's, and three Henri Farmans) about half were used to bring the squadrons up to establishment; the remainder were flown over to Amiens by the personnel of the Aircraft Park, or by the spare pilots who accompanied the squadrons. The Aircraft Park embarked at Avonmouth very early on the morning of the 17th, arriving at Boulogne on the night of the 18th. They disembarked, an unfamiliar apparition, on the following morning. The landing officer had no precedent to guide him in dealing with them. Wing Commander W. D. Beatty tells how a wire was dispatched to General Headquarters: 'An unnumbered unit without aeroplanes which calls itself an Aircraft Park has arrived. What are we to do with it?' If the question was not promptly answered at Boulogne it was answered later on. The original Aircraft Park was the nucleus of that vast system of supply and repair which supported the squadrons operating on the western front and kept them in fighting trim.

On the 21st of August the Aircraft Park moved up to Amiens, to make an advanced base for the squadrons, which were already at Maubeuge. Three days were spent at Amiens in unloading, unpacking, and setting up workshops. Then, on the 25th, they received orders to retire to Le Havre. The retreat from Mons had begun, and Boulogne was being evacuated by the British troops. How far the wave of invasion would flow could not be certainly known; on the 30th of August, at the request of the French admiral who commanded at Le Havre, the machines belonging to the Aircraft Park were employed to carry out reconnaissances along the coast roads; on the following day German cavalry entered Amiens. There was a real danger that stores and machines landed in northern France for the use of the Royal Flying Corps might fall into the hands of the Germans; accordingly a base was established, for the reception of stores from England, at St.-Nazaire, on the Loire. The advanced base of the Aircraft Park moved up, by successive stages, as the prospects of the Allies improved, first from Le Havre to Le Mans, then, at the end of September, to Juvisy, near Paris; lastly, in mid-October, the port base was moved from St.-Nazaire to Rouen, and at the end of October the advanced base left Juvisy for St.-Omer, which became its permanent station during the earlier part of the war.

The squadrons flew to France. No. 2 Squadron, at Montrose, had the hardest task. Its pilots started on their southward flight to Farnborough as early as the 3rd of August; after some accidents they all reached Dover. Their transport left Montrose by rail on the morning of the 8th of August and arrived the same evening at Prince's Dock, Govan, near Glasgow, where the lorries and stores were loaded on S.S. Dogra for Boulogne. No. 3 Squadron was at Netheravon when war broke out; on the 12th of August the machines flew to Dover and the transport moved off by road to Southampton, where it was embarked for Boulogne. The squadron suffered a loss at Netheravon. Second Lieutenant R. R. Skene, a skilful pilot, with Air Mechanic R. K. Barlow as passenger, crashed his machine soon after taking off; both pilot and passenger were killed. No. 4 Squadron on the 31st of July had been sent to Eastchurch, to assist the navy in preparations for home defence and to be ready for mobilization. From Eastchurch the machines flew to Dover and the transport proceeded to Southampton. By the evening of the 12th of August the machines of Nos. 2, 3, and 4 Squadrons were at Dover. At midnight Lieutenant-Colonel F. H. Sykes arrived, and orders were given for all machines to be ready to fly over at 6.0 a.m. the following morning, the 13th of August.

The first machine of No. 2 Squadron to start left at 6.25 a.m., and the first to arrive landed at Amiens at 8.20 a.m. This machine was flown by Lieutenant H. D. Harvey-Kelly, one of the lightest hearted and highest spirited of the young pilots who gave their lives in the war. The machines of No. 3 Squadron arrived safely at Amiens, with the exception of one piloted by Second Lieutenant E. N. Fuller, who with his mechanic did not rejoin his squadron until five days later at Maubeuge. One flight of No. 4 Squadron remained at Dover to carry out patrol duties, but a wireless flight, consisting of three officers who had made a study of wireless telegraphy, was attached to the squadron, and was taken overseas with it. Some of the aeroplanes of No. 4 Squadron were damaged on the way over by following their leader, Captain F. J. L. Cogan, who was forced by engine failure to land in a ploughed field in France.

No. 5 Squadron moved a little later than the other three. It was delayed by a shortage of shipping and a series of accidents to the machines. When the Concentration Camp broke up, this squadron had gone to occupy its new station at Gosport. On the 14th, when starting out for Dover, Captain G. I. Carmichael wrecked his machine at Gosport; on the same day Lieutenant R. O. Abercromby and Lieutenant H. F. Glanville damaged their machines at Shoreham, and Lieutenant H. le M. Brock damaged his at Salmer. The squadron flew from Dover to France on the 15th of August; Captain Carmichael, having obtained a new machine, flew over on that same day; Lieutenant Brock rejoined the squadron at Maubeuge on the 20th; Lieutenants Abercromby and Glanville on the 22nd. Lieutenant R. M. Vaughan, who had flown over with the squadron, also rejoined it on the 22nd; he had made a forced landing near Boulogne, had been arrested by the French, and was imprisoned for nearly a week.

The transport of the squadrons, which proceeded by way of Southampton, was largely made up from the motor-cars and commercial vans collected at Regent's Park in London during the first few days of the war. The ammunition and bomb lorry of No. 5 Squadron had belonged to the proprietors of a famous sauce: it was a brilliant scarlet, with the legend painted in gold letters on its side—The World's Appetiser. It could be seen from some height in the air, and it helped the pilots of the squadron, during the retreat from Mons, to identify their own transport.

The names of the officers of the Royal Flying Corps who went to France, the great majority of them by air, deserve record. They were the first organized national force to fly to a war overseas. The following is believed to be a complete list up to the eve of Mons, but it is not infallible. Officers and men were changed up to the last minute, so that the headquarters file, having been prepared in advance, is not authoritative. The squadron war diaries are sometimes sketchy. Even when surviving pilots set down what they remember, the whole war lies between them and those early days, and their memory is often fragmentary. The following list is compiled, as correctly as may be, from the diary of Lieutenant B. H. Barrington-Kennett (a careful and accurate document), the war diaries of Squadrons Nos. 2, 3, 4, and 5, which were kept in some detail, the headquarters' records, and the reminiscences of some of the officers who flew across or who travelled with the transport.