| ABILINE | April 1966 allied operation conducted east of Saigon as a spoiling operation against an enemy move on the capital |
| AK47 | Soviet-designed and manufactured assault rifle, 7.62 mm. |
| APC | Armored personnel carrier |
| ARVN | Army of the Republic of Vietnam |
| ATTLEBORO | Operation resulting in a battle that took place September-November 1966 north-west of Saigon |
| AVLB | Armored vehicle launched bridge |
| Bailey bridge | Standard Army military bridge using pre-fabricated steel panels |
| beehive round | Canisters filled with hundreds of metal darts |
| the Big Red One | U.S. 1st Infantry Division |
| BIRMINGHAM | April 1966 operation in which the U.S. 1st Infantry Division moved into War Zone C, uncovering great quantities of supplies |
| the Blackhorse Regiment | U.S. 11th Armored Cavalry Regiment |
| the Blue Spaders | Men of the 1st Battalion, U.S. 26th Infantry |
| Buddy operations | Operations by combined U.S. and South Vietnamese forces |
| CBU | Cluster bomb units |
| Chieu Hoi program | The "open arms" program initiated by President Diem in April 1963 promising clem-ency and financial aid to guerrillas who stopped fighting and returned to live under government authority |
| Chinook | CH-47 helicopter |
| claymore mine | A shaped, antipersonnel mine which when detonated propels small steel cubes in a fan-shaped pattern |
| cordon and search | Operation to seal off and search an area |
| COSVN | Central Office of South Vietnam |
| CS | Riot control agent |
| dozer-infantry team | A team of tankdozers, bulldozers, Rome Plows, and infantry which cut into the jungle |
| Eiffel bridge | Nonstandard metal military bridge of French design |
| EL PASO II | A series of operations conducted in June and July 1966 by the U.S. 1st Infantry Division and the Vietnamese 5th Division on the eastern flank of War Zone C |
| elm(s) | Element(s) |
| FITCHBURG | January 1967 operation in preparation for CEDAR FALLS |
| FSB | Fire support base |
| FSPB | Fire support patrol base |
| G-3 | Assistant Chief of Staff, Operations |
| GADSDEN | Original name for Operation JUNCTION CITY, later designating one of the deception operations in the first phase of JUNCTION CITY |
| GVN | The government of the Republic of Vietnam |
| Huey | UH-ID helicopter |
| IIFFORCEV | II Field Force, Vietnam |
| the Iron Brigade | 3d Brigade, U.S. 1st Infantry Division |
| J-2 | Assistant Chief of Staff, Intelligence |
| KIA | Killed in action |
| local force | Viet Cong combat unit subordinate to a district or province |
| LTL | Vietnamese interprovincial route |
| LZ | Landing zone |
| M16 | U.S. lightweight, rapid-firing 5.56-mm. rifle |
| M60 | U.S. 7.62-mm. machine gun |
| M79 | Shoulder-fired weapon employing an explosive 40-mm. grenade-type round |
| MACV | U.S. Military Assistance Command, Vietnam |
| mad minute | Concentrated fire of all weapons for a specified time at optimum rate |
| main force elements | Viet Cong and North Vietnamese military units subordinate to the Central Office of South Vietnam, military regions, or other higher echelons of command |
| marching fire | Fire delivered by infantry in an assault, especially with rifle fired from the hip or rapidly from the shoulder |
| MEDCAP | Medical Civic Action Program |
| meeting engagement | Collision between two advancing forces, neither of which is fully deployed for battle |
| NDP | Night defensive position |
| NIAGARA FALLS | Cover operation designed to place combat elements in position for CEDAR FALLS before striking the main blow |
| NVA | North Vietnam Army |
| OA | Objective area |
| pattern activity analysis | Procedure begun in mid-1966 which consisted of detailed plotting on maps of information on enemy activity obtained from a variety of sources over an extended period of time |
| pods | Rubberized 500 gallon containers used to hold bulk Class III products |
| PSYOP | Psychological operations |
| QL | Vietnamese national route |
| quad-.50 | Four heavy machine guns that traverse from a single pedestal and which are fired simultaneously by one gunner |
| RAG | River Assault Group (Vietnamese) |
| RPG2 | Small Soviet-made bazooka-type antitank grenade launcher |
| S-3 | Operations and training officer |
| search and clear | Offensive military operation designed to sweep through an area with the mission of locating, driving out, or destroying the enemy |
| search and destroy | Offensive operations designed to seek out and destroy enemy forces, headquarters, and supply installations, with emphasis on destruction rather than reestablishment of government control |
| "Spooky" | C 47 aircraft with two 7.62-mm. Gatling-type guns and illumination flares |
| Task Force ALPHA | 1st and 5th South Vietnamese Marine Battalions under the control of the U.S. 25th Division for Phase I of JUNCTION CITY |
| Task Force DEANE | U.S. 173d Airborne Brigade during Operation NIAGARA FALLS |
| Task Force WALLACE | Two South Vietnamese units (35th Ranger Battalion and one troop from the 3d Battalion, 1st Cavalry) which augmented the U.S. 1st Division in Phase I of JUNCTION CITY |
| TL | Vietnamese provincial route |
| Tropic Lightning Division | U.S. 25th Infantry Division |
| TUCSON | Deception operation conducted to position forces and materiel for JUNCTION CITY |
| VC | Viet Cong |