Military Involvement
| Servicemen - O surnames | KIA | POW | DNB | Pics/s |
| Obermann, Lawrence | ||||
| Odenga, Donald C. | X | |||
| Oldenkamp, Jerry | ||||
| Oldenkamp, John | ||||
| Oldenkamp, Sidney | ||||
| O'Connor, Orville | ||||
| O'Meara, John V. | X | |||
| O'Meara, Leonard | X | |||
| O'Meara, Mike | X | |||
| O'Meara, Paul | X | |||
| O'Meara, Robert E. B. | X | |||
| Oostra, Ralph | ||||
| Osborne, Fredrick |