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| KENNEDY REGIMENT | |
| KERAVIA BAY PRISONER OF WAR CAMP | |
| KIT STORES | |
| KOOYONG REGIMENT | |
| KOREAN FORCES | |
| KUCHING FORCE | |
| KUCHING PRISONER OF WAR CAMP | |
| KURING-GAI REGIMENT | |
L unit names | |
M unit names | |
N unit names | |
O unit names | |
P unit names | |
Q unit names | |
R unit names | |
S unit names | |
T unit names | |
U unit names | |
| U BOATS | |
| U HEAVY BATTERY | |
| UN PEACEKEEPING FORCES | |
| UNAMIR - UN ASSISTANCE MISSION IN RWANDA | |
| UNIFIL - UN INTERIM FORCE IN LEBANON | |
| UNITAF UNIFIED TASK FORCE IN SOMALIA | |
| UNITED NATIONS | |
| UNITED NATIONS PEACEKEEPING FORCES | |
| UNITED PROTESTANT ASSOCIATION | |
| UNITED STATES AIR FORCE | |
| UNITED STATES ARMY | |
| UNITED STATES ARMY VESSELS | |