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OPNAV
means Office of the Chief of NAVal OPerations in
Military
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442 RCT
- 442nd Regimental Combat Team
48 FW
- 48th Fighter Wing
4ID
- 4th Infantry Division
4WW
- The Fourth World War
503 RCT
- 503rd Regimental Combat Team
517 PRCT
- 517th Parachute Regimental Combat Team
596 SSC
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