Confused by abbreviations in your ancestors’ military records? Here’s a guide to some of the most common military acronyms.
Download your free copy of our Common Military Acronyms Reference Chart by clicking the button at the end of the list.
AD—Active Duty or Armored Division
AFB—Air Force Base
CONUS—Continental United States
DOS—Date of Separation
EAD—Entered Active Duty (date)
MCAS—Marine Corps Air Station
MIA—Missing in Action
MOS—Military Occupational Specialty
NAS—Naval Air Station
NMCB—Naval Mobile Construction Battalion
PCS—Permanent Change of Station
Pfc.—Private First Class
PW/POW—Prisoner of War
RCT—Regimental Combat Team
SN/SSN—Service Number/Social Security Number
Sq.—Squad or Squadron
TAD—Temporary Additional Duty
TAFMS—Total Active Federal Military Service (date)
TCG—Troop Carrier Group
USA—United States Army
USAAC/USAAF—United States Army Air Corps/ Army Air Force
USAF—United States Air Force
USMC—United States Marine Corps
USN—United States Navy
WIA—Wounded in Action
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