MTDS-Marine Tactical Data System.
MTT-Mobile Training Team.
Montagnard-From French for "mountaineer," refers to the several
tribes of non-erhnic-Vietnamese nomadic tribesmen who populate
the South Vietnamese highlands. MWHG-Marine Wing Headquarters Group. MWSG-Marine Wing Support Group.
NAC-Northern Artillery Cantonment.
NAG-Naval Advisory Group.
NAS-Naval Air Station.
NavCad-Naval Aviation Cadet.
NCC-Naval Component Commander.
NGLO-Naval Gunfire Liaison Officer.
NLF-National Liberation Front, the political arm of the Communist-led insurgency against the South Vietnamese Government.
NMCB-Naval Mobile Construction Battalion (Seabees).
NMCC-National Military Command Center.
NOD-Night Observation Device.
NPFF-National Police Field Force.
NSA-Naval Support Activity.
NSD-Naval Supply Depot.
NSDC-Northern Sector Defense Command.
Nui-Vietnamese word for hill or mountain.
Nung-A Vietnamese tribesman, of a separate ethnic group and probably of Chinese origin.
NVA-North Vietnamese Army, often used colloquially to refer to a North Vietnamese soldier.
O-l C/G-Cessna, single-engine observation aircraft.
OAB, NHD-Operational Archives Branch, Naval History Division.
OJT-On the Job Training.
Ontos-U.S.-built, lightly armored, tracked antitank vehicle armed with six coaxially-mounced 106mm recoilless rifles.
OpCon-Operational Control, the authority granted to a commander to direct forces assigned for specific missions or tasks which are usually limited by function, time, or location.
OP-Outpost or observation point.
OpO-Operation Order, a directive issued by a commander to subordinate commanders for the execution of an operation.
OPIan-Operation Plan, a plan for a single or series of connected operations to be carried out simultaneously or in succession; it is the form of directive employed by higher authority to permit subordinate commanders to prepare supporting plans and orders.
ORLL-Operations Report/Lessons Learned.
OSJS (MACV)-Office of the Secretariat, Joint Staff (Military Assistance Command Vietnam).
OV-10-North American Rockwell Bronco, twin-engine aircraft specifically designed for light armed reconnaissance missions.
PAR-Progressive Aircraft Rework.
PAVN-Peoples Army of Vietnam (North Vietnam). This acronym was dropped in favor of NVA.
PDC-Pacification and Development Councils.
PF-Popular Force, Vietnamese militia who were usually employed in the defense of their own communities.
PFC-Private First Class.
Phoenix program-A covert U.S. and South Vietnamese program aimed at the eradication of the Viet Cong infrastructure in South Vietnam.
PUC-Photo Imagery Interpretation Center.
POL-Petroleum, Oil and Lubricants.
Practice Nine-The codename for the planning of the antiinfilrrarion, barrier across the DMZ. See Dymarker.
PRC-25-Standard radio used by Marine ground units in Vietnam that allowed for voice communication for distances up to 25 miles.
Prov Corps-Provisional Corps Vietnam.
PRU-Provincial Reconnaissance Unit.
PSA-Province Senior Advisor.
PSDF-People's Self-Defense Force, a local self-defense force organized by the South Vietnamese Government after the enemy s Tet offensive in 1968.
QDSZ-Quang Da Special Zone. QRF-Quick Reaction Force.
R&R-Rest and Recreation.
Recoilless rifle, 106mm, M401A1-U.S.-built, single-shot, recoilless, breech-loaded weapon which weighs 458 pounds when assembled and mounted for firing; it has a sustained rate of fire of six rounds per minute and an effective range of 1,365 meters.
Revolutionary Development-The South Vietnamese pacification program started in 1966.
Revolutionary Development Teams-Specially trained Vietnamese political cadre who were assigned to individual hamlets and villages and conducted various pacification and civilian assistance tasks on a local level.
RF-Regional Force, Vietnamese militia who were employed in a specific area.
Rifle, M14-Gas-operated, magazine-fed, air-cooled, semi-automatic, 7.62mm caliber shoulder weapon, which weighs 12 pounds with a full 20-round magazine; it has a sustained rate of fire of 30 rounds per minute and an effective range of 460 meters.
Rifle, M16-Gas-operated, magazine-fed, air-cooled, automatic, 5.56mm caliber shoulder weapon, which weighs 3.1 pounds with a 20-round magazine; it has a sustained rate of fire of 12-15 rounds per minute and an effective range of 460 meters.
RLT-Regimental Landing Team. -
ROE-Rules of Engagement.
ROK-Republic of Korea.
Rolling Thunder-Codename for U.S. air operations over North Vietnam.
Rough Rider-Organized vehicle convoys, often escorted by helicopters and armored vehicles, using Vietnam's roads to supply Marine bases.
Route Package-Codename used with a number to designate areas of North Vietnam for the American bombing campaign. Route Package I was the area immediately north of the DMZ.