NACSEM means National Communications Security/Emanations Security COMSEC/EMSEC Information Memorandum in Military
Similar to NACSEM
201MIB - 201st Military Intelligence Battalion20SCVI - 20th South Carolina Volunteer Infantry Regiment
21CLW - 21st Century Land Warrior
21CLWTLD - 21st Century Land Warrior Top Level Demonstration
24 MEU - 24th Marine Expeditionary Unit
24NAF - 24th Numbered Air Force
26PEMR - 26th Pennsylvania Emergency Militia Regiment
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