| Name | Unit |
|---|---|
| OROSCO, Ernest Delgado (WIA) | Company B, 1st Battalion, 8th Infantry Regiment, 4th Infantry Division |
| ORR, Albert Isaac, Jr. | Company L, 3rd Battalion, 302nd Infantry Regiment, 94th Division |
| ORR, Edward (KIA) | Pilot, 12th Aero Squadron |
| ORR, Robert H. | 49th Fighter-Bomber Wing, 5th Air Force |
| ORR, Ross W. | 5th Company, 2nd Regiment, First Special Service Force |
| ORR, William F. (WIA) | B-29 Pilot; 61st Bombardment Squadron, 39th Bombardment Group (VH), 20th AF |
| ORSINI, Donald Anthony (WIA) | Company D, 1st Battalion, 12th Cavalry, 1st Cavalry Division (Airmobile) |
| ORTILANO, Narcisco (WIA) | Company M, 3rd Battalion, 57th Infantry Regiment (Philippine Scouts), Philippine Division, US Arm) |
| ORTIZ, Conception (KIA) | Company I, 125th Infantry Regiment, 32nd Division |
| ORTIZ, Raymond (WIA) | Company A, 1st Battalion (Airborne), 8th Cavalry, 1st Cavalry Division |
| ORTT, Horace F. (KIA) | Battery C, 123rd Field Artillery, 33rd Division (National Guard) |
| OSBORN, Morton (WIA) | Company H, 47th Infantry Regiment, 4th Division |
| OSBORNE, Harry | Company F, 9th Infantry Regiment, 2nd Division |
| OSBORNE, Weedon Edward, DDS (KIA) | Attached to the 6th Regiment (USMC), 2nd Division (U.S. Army) |
| OSBORNE, William Lloyd | while serving with the 51st Infantry Regiment (Philippine Army) |
| OSMOND, Frank Wright (WIA) | Company A, 301st Battalion, Tank Corps |
| OSTBERG, Edwin Joseph (KIA) | Commander, 1st Battalion, 507th Parachute Infantry Regiment, 82nd Airborne Division |
| OSTERBERG, Norman Arthur (WIA) | Headquarters Company, 2nd Battalion, 327th Glider Infantry, 101st Airborne Division |
| OSWALD, David Percy (KIA) | 161st Infantry, 25th Infantry Division |
| OTAKE, Masanao Russell (KIA) | Company C, 100th Infantry Battalion, 442d Regimental Combat Team, attached to the 36th Infantry Division |
Description