MSB main support battalion
MSC Medical Service Corps
MSC Military Sealift Command
msec millisecond
MSG Marine Security Guard
msg message
msgr messenger
msl missile
msl whd missile warhead
msn mission
MSR main supply route
MST maintenance support team
MT mechanical time
MTMC US Army Military Traffic Management Command
mtr motor
mvmt movement
mvr maneuver
mvr bn maneuver battalion
mvr elm maneuver element
MWR missile warning receiver
NAF numbered air force
NBC nuclear, biological and chemical
NCA National Command Authority
NCO noncommissioned officer
NCW Network-Centric Warfare; Netcentric Warfare
ND Navy Department
NDO nuclear deterrence operations
NDU National Defense University
nec necessary
NECC Navy Expeditionary Combat Command
NETF naval expeditionary task force
NG National Guard
NIIN national item identification number
NMAWC Naval Mine and Anti-Submarine Warfare Command
noncom noncommissioned officer
NORAD North American Aerospace Defense
NOTAR no tail rotor
NSC National Security Council
NSFS naval surface fire support
NSN national stock number; NATO stock number
nuc nuclear
nuc atk nuclear attack
nuc wpn nuclear weapon
NVG night vision goggles
obj objective
obs obstacle
obsn observation
obsn hel observation helicopter
OCA offensive counterair
OCAR Office of the Chief, Army Reserve
OCS officer candidate school
OCSA Office of the Chief of Staff, US Army
OD officer of the day
OD olive drab
OF Operating Force (s)
off officer
OOD officer of the deck
op operation
OP observation post
OPCON operational control
opn operation
opns scty operations security
ord ordnance
Ord C Ordnance Corps
orgn organization
OSA Office of the Secretary of the Army
OSB option selection button
OSD office of the Secretary of Defense
PA Public Affairs
PAC personnel and administration center
PACAF Pacific Air Forces
PACFLT Pacific Fleet
PACOM US Pacific Command
pantel panoramic telescope
PATRIOT Phased Array Tracking Radar Intercept on Target
PBR river patrol craft
PC coastal patrol craft
pcht parachute
PD point-detonating
perm permanent
pers personnel
PFD primary flight display
PIBD point-initiating base-detonating
PGM precision guided munitions
PGRV precision-guided re-entry vehicle
PHIBGRU amphibious group
phibron amphibious squadron
plat platoon
plat ldr platoon leader
plat sgt platoon sergeant
plt pilot
PMFD primary multifunction display
PO petty officer
POC platoon operations center
POL petroleum, oil and lubricants
pos position
POSNAV inertial position navigation system
POST passive optical seeker technique
POW prisoner of war
PR personnel recovery
pri-fly primary flight control
prim primary
prim msn primary mission
prin principal
proj projectile
prop propeller
prox proximity
PS chloropicrin
psi pound per square inch
psn position
PSYOP Psychological Operations
pt point
PT physical training
pvt private
PW prisoner of war
PZ pickup zone
QMC