UN has various meanings in the Military category. Discover the full forms, definitions, and usage contexts of UN in Military.
An organization of countries established in 1945 with 51 members, expanded to 193 countries as of August 2012. Its purpose is "to preserve peace through international cooperation and collective security".
MilitaryA code meaning "information not available. An unidentified target. An aircraft or ship that has not been determined to be hostile, friendly, or neutral using identification friend or foe and other techniques, but that must be tracked by air defense or naval engagement systems.
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