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XXII Corps / II Field Force, Vietnam

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XXII Corps: XXII Corps / Twenty-Second Corps / 22nd Corps / XXII Army Corps


II Field Force, Vietnam: II Field Force / Second Field Force / 2nd Field Force / II Force / II Field Force, Vietnam







World War II [XXII Corps]


Central Europe


Vietnam War [iI Field Force, Vietnam]


Counteroffensive, Phase II

Counteroffensive, Phase III

Tet Counteroffensive

Counteroffensive, Phase IV

Counteroffensive, Phase V

Counteroffensive, Phase VI

Tet 69/Counteroffensive

Summer-Fall 1969

Winter-Spring 1970

Counteroffensive, Phase VII



Jan 15, 1944 [XXII Corps]

Jan 10, 1966 [iI Field Force, Vietnam]



Jan 20, 1946 [XXII Corps]

May 3, 1971 [iI Field Force, Vietnam]


DECORATIONS: [iI Field Force, Vietnam]


Meritorious Unit Commendations (streamers embroidered Vietnam 1966 - 1967; Vietnam 1967 - 1969; Vietnam 1969; and Vietnam 1969 - 1971)


Republic of Vietnam Cross of Gallantry with Palm (streamer embroidered Vietnam 1970)


Republic of Vietnam Civil Action Honor Medal First Class (streamer embroidered Vietnam 1969 - 1970).





Constituted 9 January 1944 in the Army of the United States as Headquarters and Headquarters Company, XXII Corps.


Activated 15 January 1944 at Fort Campbell, Kentucky.


Inactivated 20 January 1946 in Germany.


Alloted 12 July 1950 to the Regular Army.


Redesignated 5 January 1966 as Headquarters and Headquarters Company, II Field Force.


Activated 10 January 1966 at Fort Hood, Texas.


Redesignated 15 March 1966 as Headquarters and Headquarters Company, II Field Force, Vietnam.


Inactivated 3 May 1971 at Fort Hood, Texas.


Redesignated 2 September 1982 as Headquarters and Headquarters Company, XXII Corps.





The XXII Corps (22nd Corps) was a corps of the United States Army during World War II and the Cold War, and as II Field Force, Vietnam, the Vietnam War.


World War II


The XXII Corps was activated on January 15, 1944, at Camp Campbell, Kentucky, and changed station to Fort Dupont, Delaware, before embarking for the European Theater in November of 1944.


The shoulder patch worn by the XXII Corps was approved on April 16th, 1944, and the device on the patch is a pheon which is representative of power and srength. The colors blue and white are from the Corps' distinguishing flag.


Following the end of World War II, XXII Corps remained in Germany on occupation duty. Then, on January 20, 1946 in Germany, XXII was inactivated.



Vietnam War


The XXII Corps remained inactive for nearly twenty years until it was finally reactivated on January 10, 1966. When reactivated at Ft. Hood, Texas, in January 1966, the command received its new name, II Field Force.


II Field Force, Vietnam was a U.S. Army Corps-level command during the Vietnam War.


Activated on March 15, 1966, it became the largest corps command in Vietnam and one of the largest in Army history. II Field Force was assigned the lineage of the U.S. XXII Corps, a World War II corps in the European Theater of Operations. II Field Force was a component of U.S. Military Assistance Command Vietnam (MACV) and had its headquarters in Long Binh.


II Field Force's area of responsibility was III Corps Tactical Zone, later renamed Military Region 3, which comprised eleven provinces surrounding Saigon. Among the divisions and brigades it controlled were:


1st Infantry Division

9th Infantry Division

25th Infantry Division

101st Airborne Division

1st Cavalry Division (Airmobile)

3rd Brigade 82nd Airborne Division

3rd Brigade, 4th Infantry Division

173rd Airborne Brigade

U.S. 196th Light Infantry Brigade

199th Light Infantry Brigade

11th Armored Cavalry Regiment

12th Combat Aviation Group

23rd Artillery Group

54th Artillery Group

1st Australian Task Force

Royal Thai Army Volunteer Force


II Field Force controlled units participating in the 1968 Tet Offensive and the 1970 Cambodian Incursion. II Field Force was de-activated on May 2, 1971, during the withdrawal of U.S. ground combat forces from Vietnam, with its assets providing the basis for its successor, Third Regional Assistance Command (TRAC).


The men of II Field Force fought bravely during the Vietnam War. XXII Corps took part in Counteroffensive and Counteroffensive Phases II, III, IV, V, VI, and VII including Tet 69 Counteroffensive and the Summer-Fall 1969 and Winter-Spring 1970. This earned the XXII Corps the Meritorious Unit Commendation, Republic of Vietnam Cross of Gallantry with Palm, and Republic of Vietnam Civil Action Honor Medal First Class.


II Field Force (and thus the XXII Corps) was inactivated on May 3, 1971.


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