Constituted 14 December 1942 in the Army of the United States as the 864th Engineer Aviation Battalion

Activated 1 January 1943 at Geiger Field, Washington

Inactivated 30 June 1946 in Japan

Allotted 18 February 1949 to the Organized Reserve Corps

Activated 14 March 1949 at Morristown, New Jersey

Inactivated 22 September 1949 at Morristown, New Jersey

Activated 1 March 1951 at Tulsa, Oklahoma

(Organized Reserve Corps redesignated 9 July 1952 as the Army Reserve)

Inactivated 11 July 1952 at Tulsa, Oklahoma

Withdrawn 8 July 1955 from the Army Reserve and allotted to the Regular Army

Activated 25 September 1955 at Wolters Air Force Base, Texas

Reorganized and redesignated 15 May 1956 as the 864th Engineer Battalion

864th Engineer Battalion Honors

Campaign Participation Credit

World War II: New Guinea; Bismarck Archipelago; Luzon

Vietnam: Defense; Counteroffensive; 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; Sanctuary Counteroffensive; Counteroffensive, Phase VII

Southwest Asia: Defense of Saudi Arabia; Liberation and Defense of Kuwait

Decorations

Meritorious Unit Commendation (Army) for VIETNAM 1965-1967

Meritorious Unit Commendation (Army) for VIETNAM 1967-1968

Meritorious Unit Commendation (Army) for SOUTHWEST ASIA

Philippine Presidential Unit Citation for 17 OCTOBER 1944 TO 4 JULY 1945

Republic of Vietnam Civil Action Honor Medal, First Class for VIETNAM 1970-1971