Editing Army of the Republic of Vietnam (section)

===Divisions===
* [[1st Division (South Vietnam)|1st Infantry Division]] – The French formed the 21st Mobile Group in 1953, renamed 21st Division in January 1955, the 1st Division later that year. Both the 1st and 2nd Divisions were established, Gordon Rottman writes, on January 1, 1959.<ref>Gordon L. Rottman, "Army of the Republic of Vietnam 1955–75," Osprey, 2012.</ref> Considered "one of the best South Vietnamese combat units". Based in Huế, it had four rather than three regiments. Component units:
** 1st, 3rd, 51st and 54th Infantry Regiments
** 10th, 11th, 12th and 13th Artillery Battalions
** 7th Armoured Cavalry Squadron
** US Advisory Teams 3 and 4 (renumbered 18 and 19 in 1968)
* [[2nd Division (South Vietnam)|2nd Infantry Division]] – The French formed the 32nd Mobile Group in 1953, renamed 32nd Division in January 1955, then the 2nd Division later that year. Based in Quảng Ngãi, it was considered a "fairly good" division. Component units:
** 4th, 5th and 6th Infantry Regiments
** 20th, 21st, 22nd and 23rd Artillery Battalions
** 4th Armoured Cavalry Squadron
** US Advisory Team 2 (renumbered 17 in 1968).
* [[3rd Division (South Vietnam)|3rd Infantry Division]] – Raised in October 1971 in Quảng Trị. One regiment was from the 1st Division (the 2nd Inf Regt). Based at Da Nang. It collapsed in the 1972 [[Easter Offensive]], was reconstituted, and was destroyed at Da Nang in 1975. Component units:
** 2nd, 56th and 57th Infantry Regiments
** 30th, 31st, 32nd and 33rd Artillery Battalions
** 20th Armoured Cavalry Squadron
** US Advisory Team 155
* [[5th Division (South Vietnam)|5th Infantry Division]] – Originally formed in North Vietnam as the 6th Division (commonly known as the "Nung" division), and renamed the 3rd Field Division after its move to Song Mao then to the 5th Division in 1959. Many [[Nùng people|Nungs]] originally were in its ranks. It was at Biên Hòa in 1963 and was involved in the overthrow of Diệm. It then operated north of Saigon. It entered Cambodia in 1970 and defended An Lộc in 1972. Component units:
** 7th, 8th and 9th Infantry Regiments
** 50th, 51st, 52nd and 53rd Artillery Battalions
** 1st Armoured Cavalry Squadron
** US Advisory Team 70
* [[7th Division (South Vietnam)|7th Infantry Division]] – Formed as the 7th Mobile Group by the French, it became the 7th Division in 1959. Served in Mekong Delta 1961–75. Component units:
** 10th, 11th and 12th Infantry Regiments
** 70th, 71st, 72nd and 73rd Artillery Battalions
** 6th Armoured Cavalry Squadron
** US Advisory Team 75
* [[9th Division (South Vietnam)|9th Infantry Division]] – Formed in 1962, northern Mekong Delta. Component units:
** 14th, 15th and 16th Infantry Regiments
** 90th, 91st, 92nd and 93rd Artillery Battalions
** 2nd Armoured Cavalry Squadron
** US Advisory Team 60
* [[18th Division (South Vietnam)|18th Infantry Division]] – Formed as the 10th Division in 1965. Renamed the 18th Division in 1967 (number ten meant the worst in [[Military slang|GI slang]]). Based at Xuân Lộc. Made famous for its defence of that town for a month in March–April 1975. Component units:
** 43rd, 48th and 52nd Infantry Regiments
** 180th, 181st, 182nd and 183rd Artillery Battalions
** 5th Armoured Cavalry Squadron
** US Advisory Team 87
* [[21st Division (South Vietnam)|21st Infantry Division]] – The ARVN 1st and 3rd Light Divisions were formed in 1955, then renamed the 11th and 13th Light Divisions in 1956. They were combined to form the 21st Division in 1959. Served mainly near Saigon and in the Mekong Delta. Component units:
** 31st, 32nd and 33rd Infantry Regiments
** 210th, 211st, 212nd and 213rd Artillery Battalions
** 9th Armoured Cavalry Squadron
** US Advisory Team 51
* [[22nd Division (South Vietnam)|22nd Infantry Division]] – Initially raised as the 4th Infantry Division, which existed briefly in the 1950s, but was renamed the 22nd Division as four is considered an unlucky number in Vietnam (sounds in Vietnamese like the word for death). The ARVN 2nd and 4th Light Divisions were formed in 1955; the 4th was renamed the 14th Light Division in 1956. They were combined to form the 22nd Division in 1959. It served near Kon Tum and elsewhere in the Central Highlands. It collapsed in 1972, and in 1975 was in Bình Định province. It was evacuated south of Saigon as Central Highlands front fell, and was one of the last ARVN units to surrender. Component units:
** 40th, 41st, 42nd and 47th Infantry Regiments
** 220th, 221st, 222nd and 223rd Artillery Battalions
** 19th Armoured Cavalry Squadron
** US Advisory Team 22
* [[23rd Division (South Vietnam)|23rd Infantry Division]] – Originally the 5th Light Division, it was renamed 23rd in 1959. It operated in central Vietnam, and entered Cambodia in 1970. It fought well in 1972, successfully defending Kon Tum, but was shattered in 1975 while defending Ban Me Thout. Component units:
** 43rd, 44th, 45th and 53rd Infantry Regiments
** 230th, 231st, 232nd and 233rd Artillery Battalions
** 8th Armoured Cavalry Squadron
** US Advisory Team 33
* [[25th Division (South Vietnam)|25th Infantry Division]] – Formed in Quảng Ngãi in 1962, it moved to south west of Saigon in 1964. It entered Parrot's Break, Cambodia in 1970, and defended the western approaches of Saigon in 1972 and 1975. Component units:
** 46th, 49th and 50th Infantry Regiments
** 250th, 251st, 252nd and 253rd Artillery Battalions
** 10th Armoured Cavalry Squadron
** US Advisory Team 99
*[[Vietnamese Airborne Division|Airborne Division]] – originally formed by the French as the Airborne Group in 1955. Brigade strength by 1959, it was formed as division in 1965. Based at [[Tan Son Nhut Air Base]], it was used as a fire brigade throughout South Vietnam. It included 9 Airborne Battalions and 3 Airborne Ranger Battalions. It fought in Cambodia in 1970 and Laos in 1971. It was used as brigade Groups in 1975, the 1st at Xuân Lộc, the 2nd at Phan Rang, and the 3rd at Nha Trang. A 4th Brigade was added in 1974. Component units:
** 1st Airborne Brigade
*** 1st, 8th and 9th Airborne Battalions
*** 1st Airborne Artillery Battalion
** 2nd Airborne Brigade
*** 5th, 7th and 11th Airborne Battalions
*** 2nd Airborne Artillery Battalion
** 3rd Airborne Brigade
*** 2nd, 3rd and 6th Airborne Battalions
*** 3rd Airborne Artillery Battalion
** 4th Airborne Brigade
*** 4th and 10th Airborne Battalions
** US Airborne Advisory Team 162