OPUS means OSS/PODPS
Observation Support System/Post-Observation Data Processing System Unified System in
Military
Similar to OPUS
1LT - First Lieutenant
1MC - General Announcing System
1MX - 1st Battalion The Middlesex Regiment
1NCD - 1st Naval Construction Division
1SG - First Sergeant
1st - IOC 1st Information Operations Command
Land
1WVI - 1st West Virginia Infantry Regiment
View all in Military