First Battalion Four Marines
Personnel Rosters - Charlie Company
1 January - 31 December 1969
Tour Date - When Joined Company
| Name | Rank | MOS | Tour | Purple Heart | Purple Heart | Purple Heart | KIA |
| Ochoa, Jose J | L/Cpl | 0351 | 9 Apr 69 | ||||
| Olson, Robert L | Cpl | 0311 | 1 Mar 69 | ||||
| Ormgre--, Wayne | Cpl | 0331 | |||||
| Ortiz, Anthony | L/Cpl | 0311 | 1 Mar 69 | 3 Mar 69 | 26 Feb 69 | ||
| Osmolak, David A | PFC | 0311 | 30 Jul 69 | ||||
| Overton, George W, Jr | L/Cpl | 0311 | 5 Feb 69 | 5 Mar 69 | |||
| Owens, Sterling L | PFC | 0311 | |||||