First Battalion Four Marines
Personnel Rosters - Bravo Company
1 January - 31 December 1969
Tour Date - When Joined Company
| Name | Rank | MOS | Tour | Purple Heart | Purple Heart | KIA |
| O'Donnell, Vincent | Cpl | 0341 | ||||
| O'Donnel, William t | L/Cpl | 0311 | ||||
| Okenquist, Carl J | PFC | 0311 | 2 Jul 69 | |||
| Oskerson, Allen E | PFC | 0311 | 9 Apr 69 | |||
| Owens, Mackubin T, Jr | 1st Lt | 0302 | 25 May 69 | 26 May 69 | ||