AAEAF: Advanced Allied Expeditionary Air Force
AO: area of operations
APC:armored personnel carrier
ARVN: Army Republic of Vietnam
CBU: cluster bomb unit
CCA: Combat Command A
CCB: Combat Command B
CIDG: Civilian Irregular Defense Group
CP: command post
CTZ: corps tactical zone
DT: defensive target
ETO: European Theater of Operations
FAC: forward area controller
FDC: fire direction center
FDO: fire direction officer
FO: forward observer
FSB: fire support base
FSE: fire support element
H and I: harassment and interdiction
HE: high explosive
HHC:headquarters and headquarters company
I CTZ: I Corps Tactical Zone
IFF:identification, friend/foe (radar)
KATUSA: Korean augmentation to United States Army
KIA: killed in action
LCI: landing craft, infantry
LCM: landing craft, medium
LFT: light fire team
LNO/FSCOORD: liaison officer/fire support coordinator
LP: listening post
LST: landing ship, tank
LZ: landing zone
MACV: Military Assistance Command Vietnam
NCO: noncommissioned officer
NDP: night defensive position
NVA: North Vietnamese Army
OBOE: a radar bombing system
OPCON: operational control
OPFOR: opposing force
OT: observer- target (line)
PF: Popular Force
PZ: pickup zone
RAF: Royal Air Force
RCAF: Royal Canadian Air Force
RF/PF: Regional Force/Popular Force
SOP: standing operating procedure
TAC: tactical air command
TAF: tactical air force
TD: tank destroyer
TF: task force
TOC: tactical operations center
USMC: United States Marine Corps
VNAF: Vietnamese Air Force
VT: variable time fuze
WIA: wounded in action
WP: white phosphorous