| Pvt. | Robert | B. | Oakes |
| Lt. | J | W. | O'Brian |
| Pvt. | Joseph | J. | O'Brien |
| 2nd Lt. | John | W. | O'Brien |
| 1st Lt. | Mike | O'Brien | |
| SSgt. | Tom | W. | Odom |
| Pvt. | Patrick | R. | O'Donnell |
| 1st Lt. | Arthur | W. | Oldham |
| Pfc. | George | Olesh | |
| ? | George | Olesh Jr. | |
| Sgt. | Aubrey | H. | Oliver |
| Pvt. | Charles | A, | Olson |
| Sgt. | Andrew | P. | Omasta |
| Cpl. | Andrew | P. | Omasta |
| Cpl. | Andrew | P. | Omasta |
| Sgt. | Andrew | P. | Omasta |
| Pvt. | Andrew | P. | Omasta |
| Pfc. | Henry | W. | Ommen |
| Pvt. | Frank | J. | O'Neil |
| Pfc. | Ray | O'Neil | |
| Pvt. | Ray | O'Niel | |
| Sgt. | Ortagus | ||
| Pfc. | Stanley | T. | Orzell |
| Pfc. | Victor | A. | Osburn |
| Pfc. | Alexander | W. | Osmond |
| Pvt. | Alexander | W. | Osmond |
| Pvt. | Charles | J. | Otzel |
| T/4 | Charles | J. | Otzel |
| Pvt. | Joseph | W. | Owens |
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