OPN in Military could mean:
Displaying 1-2 of 2 result(s).
Similar to OPN
11AD - 11th Airborne Division11B - Military Occupational Specialty for Infantryman
11z - Command Sergeant Major Military Occupational Specialty code
12 WVI - Twelvth West Virginia Infantry Regiment
121ARW - 121st Air Refueling Wing
129 RQW - 129th Rescue Wing
12N - Horizontal Construction Engineer
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