First Battalion Four Marines
Personnel Rosters
1 January - 31 December 1965
| Name | Rank | MOS | Company | Tour | Purple Heart | Purple Heart | Purple Heart | KIA |
| Yanez, Salvador | L/Cpl | 3531 | HS | |||||
| Yanowski, Thomas J | PFC | 2511 | HS | |||||
| Yarnell, Paul R, Jr | L/Cpl | 0311 | A | |||||
| Ybarra, Jesus | L/Cpl | 3371 | HS | |||||
| Yeack, James L | PFC | 0311 | D/HS | 29 Aug 65 | ||||
| Yoho, Marvin B | L/Cpl | 0341 | HS | |||||
| Yost, Clyde D | L/Cpl | 3371 | HS | |||||
| Youmans, Tommy L | Cpl | 0441 | HS | |||||
| Young, Henry J | PFC | 0311 | D | 29 Aug 65 | ||||
| Youngcourt, Robert W | PFC | 0311 | B | 28 Aug 65 | ||||
| Youns, Joseph M | Sgt | 0311 | C | |||||
| Yuhas, John J, Jr | Sgt | 0369 | C | |||||