| | | |
| 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 | |
| UNITED STATES FORCES | |
| UNITED STATES MARINE CORPS UNITED STATES NAVY | |
| UNITED STATES NAVY SHIPS | |
| UNIVERSITY OF NEW SOUTH WALES REGIMENT | |
| UNMCTT UNITED NATIONS MINE CLEARING TRAINING TEAM, AFGHANISTAN/PAKISTAN | |
| UNSCOM UNITED NATIONS SPECIAL COMMISSION, IRAQ | |
| UPA | |
| | PT UNITED PROTESTANT ASSOCIATION | |
| US 1 CAVALRY DIVISION | |
| US 11 AIRBORNE DIVISION | |
| US 129 INFANTRY REGIMENT | |
| US 132 INFANTRY REGIMENT | |
| US 162 INFANTRY REGIMENT | |
| US 173 AIRBORNE BRIGADE | |
| US 182 INFANTRY REGIMENT | |
| US 32 INFANTRY DIVISION | |
| US 340 ENGINEER REGIMENT | |
| US 37 INFANTRY DIVISION | |
| US 41 INFANTRY DIVISION | |
| US 43 INFANTRY DIVISION | |
| US 503 PARACHUTE INFANTRY REGIMENT | |
| US 93 INFANTRY DIVISION | |
| US ARMY | |