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Operational Support Systems
in Military
Office of Strategic Services
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Optical Surveillance System
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Operations Support System
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Operation Support System
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Similar to OSS
147FA - 147th Field Artillery Regiment
15MG - 15 Militia Group
17AD - 17th Airborne Division
180FA - 180th Field Artillery Regiment
189FA - 189th Field Artillery Regiment
1BCT - First Brigade Combat Team
1CAV - 1st Cavalry Division
View all in Military