GPS
global positioning system
GRG
grid reference graphic
GS
general support
GTA
graphic training aid
HAF
helicopter assault force
HALO
high altitude low opening
HE
high-explosive
HEAT
high-explosive antitank
HEDP
high-explosive, dual-purpose
HHC
headquarters and headquarters company
H HOUR
start time of operation
HHQ
higher headquarters
HLZ
helicopter landing zone
HMMWV
high-mobility, multipurpose wheeled vehicle
HQ
headquarters
HR
hostage rescue
HUMINT
human intelligence
IAD
immediate action drill
IAW
in accordance with
ICM
improved conventional munition
ICOM
integrated communications security; type of radio routinely used by enemy
ICV
infantry carrier vehicle
IED
improvised explosive device
IEDK
individual equipment decontamination kit
IFAK
individual first aid kit
IFF
identify friendly forces
ILLUM
illumination/to light an area
INCEN
incendiary
INFIL
infiltration
IOT
in order to
IP
insertion point; initial point (terrain feature that pilot references once in operational area)
IPW
interrogate prisoner of war
IR
infrared; intelligence requirement
IRP
initial rally point
ISR
intelligence, surveillance, and reconnaissance
ISU
integrated sight unit
IVIS
intervehicular information system
IVO
in vicinity of
KIA
killed in action
KIT
personal gear
KM
kilometer
LASSO
mark a target with an IR laser (circle pattern)
LAW
light antitank weapon
LAZ
mark a target with an IR laser
LBE
load-bearing equipment
LBV
load-bearing vest
LC
line of contact
LCC
last covered and concealed position
LCSS
lightweight camouflage screening system
LD
line of departure
LD/LC
line of departure/line of contact
LDR
leader
LMG/COAX
light machine gun/coaxial
L/O
liaison officer
LOA
limit of advance
LOC
location
LOGPAC
logistics package
LOS
line of sight
LOW VIS
operations that use civilian attire/vehicles
LP
listening post
LP/OP
listening post observation post
LT
local time; light; lieutenant
LTL
laser (to) target line (azimuth)
L/U
linkup
LZ
landing zone
MAW
medium antitank weapon
MAX
maximum
MBA
main battle area
MBITR
multiband inter-team radio
MCS
maneuver control system
MD
map distance
MDL
mission deployment load
MDMP
military decision-making process
MEDEVAC
medical evacuation
MEL
maximum engagement line
METL
mission essential task list
METT-TC
mission, enemy, terrain and weather, troops available, time available, and civilian considerations
MG
machine gun
MGRS
military grid reference system (map)
MGS
mobile gun system
MIA
missing in action
MIL
milradian (6400 to a circle)
MILDOT
equals 3.25 MOA
MIN
minimum
MOA
minute of angle (1 inch @ 100 meters, 2 inch @ 200); memorandum of agreement
MOLLE
modular lightweight load-carrying equipment
MOPP
mission-oriented protective posture
MOUT
military operations in urban terrain
MRE
meal, ready to eat
MSL
mean sea level (feet)
MSR
main service route
MSS
mission support site
MTC
movement to contact
MTOE
modified table of organization and equipment
MTP
mission training plan
MVMT
movement
MWR
morale, welfare, and relaxation
N
north
N/A
not applicable
NAI
named area of interest
NATO
North Atlantic Treaty Organization
NBC
nuclear, biological, chemical
NCIS
Naval Criminal Investigative Service
NCO
noncommissioned officer
ND
negligent discharge
NEW
net explosive weight
NIR
near-infrared
NLT
not later than
NM
nautical miles
NOD
night optical device
NVD
night vision devices
NVG
night vision goggle
OAKOC + Water
obstacles (avenues of approach, key terrain, observation/fields of fire, cover and concealment, and water sources)
OBJ
objective
OCOKA
observation, cover and concealment, obstacles, key terrain, avenues of approach
OGA
other government agency
OH
observation helicopter
OP
observation post
OPCON
operational control
OPLAN
operations plan
OPORD
operations order
OPSEC
operations security
OPSKEDS
operation schedule
ORP
objective rally point
O/S
offset (used in nine-line CAS)
OSI
Office of Security Investigations (US Air Force)
OT
observer to target (line) azimuth
PAC
personnel and administration center
PACE
primary, alternate, contingency, and emergency
PAX
persons/passenger
PB
patrol base
PC
precious cargo
PCC
pre-combat check
PCI
pre-combat inspection
PD
point of departure
principal direction of fire
PDSS
pre-deployment site survey
PIR
priority of intelligence requirement
PJ
parajumper (Air Force trauma medic)
PL
phase line; platoon leader
PLT
platoon
PMCS
preventive maintenance checks and services
POC
point of contact
POSNAV
position navigation
PRI
primary
PSG
platoon sergeant
PSYOP
psychological operations
P/U
pickup (point)
PUC
person under control
PUP
pop-up point
PW
prisoner of war
PZ
pickup zone
QRF
quick reaction force
RAP
rocket-assisted projectile
RATELO
radiotelephone operator
RD
road; round or ammunition
RDF
radio direction finder
RDS
ammunition
RDVU
rendezvous point
RECON
reconnaissance
REDCON
readiness condition
RF
representative fraction
RFA
restrictive fire area
RFL
restrictive fire line
RGR
roger; Ranger
ROCK DRILL
a rehearsal that takes place in a small area
ROE
rules of engagement
ROI
rules of interaction
ROPE
mark a target with an IR laser (circle pattern)—LASSO; fast rope insertion/infiltration
RP
rally point; release point
RPG
rocket-propelled grenade
RPM
revolutions per minute
RPV
remotely piloted vehicle
RRP
reentry rally point
R&S
reconnaissance and security
RS
road space
RSTA
reconnaissance, surveillance, and target acquisition
RT
receiver-transmitter
RTO
radiotelephone operator
S-
staff
S-1
administration/personnel
S-2
intelligence
S-3
operations
S-4
supply
S-5
public affairs
S-6
communications
S/A
staging area
SA
situational awareness
SALUTE
size, activity, location, uniform, time, and equipment
SASO
stability and support operations
SAT
satellite
SAT COM
satellite communications