| 221 |
UNP |
Office of United Nations Political and Security Affairs, Department of State |
국무부 유엔정치·안보담관실 |
| 222 |
WE |
Office of Western European Affairs, Department of State |
국무부 서유럽담당실 |
| 223 |
OSD |
Office of the Deputy Secretary of Defense |
국방차관실 |
| 224 |
OCS |
Office, Chief of Staff |
참모총장실 |
| 225 |
OCS |
Officer Candidate School |
장교후보생학교 |
| 226 |
AO |
Oiler (vessel) |
유조함 |
| 227 |
OCB |
Operations Coordinating Board |
작전조정위원회 |
| 228 |
ORD |
Ordnance |
병기 |
| 229 |
Ourad |
Our radio (telegram) |
무전(전문) |
| 230 |
PACFLT |
Pacific Fleet |
태평양 함대 |
