Below, as nearly as can be determined, is the troop list of the 1st Marine Division (Reinf) for the Inchon Landing. The list is correct as to units included, but it has been difficult to reconcile the totals given for units.
| Unit | Actual Strength |
| Headquarters Bn | 916 |
| 1st Serv Bn | 873 |
| 1st Sig Bn | 480652 |
| 1st MT Bn | 686 |
| 1st Med Bn | 566 |
| 1st Am Trk Co | 244 |
| 1st Ord Bn | 533 |
| 1st Shore Party Bn | 481648 |
| 1st Engr Bn | 1,038 |
| 1st Tank Bn | 482811 |
| 11th Marines | 4832,360 |
| 1st Marines | 3,850 |
| 5th Marines | 3,611 |
| 7th Marines | 0 |
| 1st Am Trac Bn | 868 |
| 1st CSG | 4841,291 |
| 7th MT Bn | 430 |
| Det MTACS-2 | 55 |
| VMO-6 | 62 |
| Total Marine Corps and Navy | 19,494 |
| Korean MC Regt | 2,786 |
| Co A, 56th Am Trac Bn, USA | 151 |
| Hq Det, USA | 38 |
| Sig Det, USA | 37 |
| 96th FA Bn, USA | 388 |
| 2d Engr Spec Brig, USA | 952 |
| 73d Engr (c) Bn, USA | 724 |
| 50th Engr Port Const Co., USA | 214 |
| 65th Ord Amm Co., USA | 256 |
| Total U. S. Army | 2,760 |
| Grand Total | 25,040 |
480 Includes Carrier Platoon, FMF.
481 Includes Detachments of Naval Beach Group 1.
482 Includes Anti-Tank Platoons of the Antitank Companies of the 1st and 5th Marines.
483 Includes Battery C, 1st 4.5″ Rocket Bn, FMF.
484 Includes 1st Fumigation and Bath Plat., FMF; 1st Aerial Delivery Plat., FMF; and Naval Beach Group 1 (less dets. with the 1st Shore Party Bn).
The following units of the Division, distributed as indicated, did not participate in the Inchon Landing:
| Marine Corps | Navy | Total | ||||
| Officers | Enlisted | Officers | Enlisted | Officers | Enlisted | |
| RCT-7, en route to the Far East. | 233 | 4,905 | 21 | 224 | 254 | 5,129 |
| Administrative Center Pusan, Korea | 9 | 172 | 1 | 9 | 173 | |
| Division Administrative Center, 1st Armd Amph TracBn, 17-year-olds and casuals at Kobe, Japan |
59 | 1,268 | 3 | 14 | 62 | 1,282 |
| Total | 301 | 6,345 | 24 | 239 | 325 | 6,584 |