The 311th Military Intelligence Battalion is an active duty Military Intelligence (MI) Battalion of the United States Army stationed at Camp Zama, Japan and assigned to the 500th MI Brigade. The 311th MI Battalion is equipped to continue to provide support and train alongside U.S. Army Japan partner units, and Japan Ground Self-Defense Force coalition partners. The 311th conducts continuous multi-discipline Intelligence operations in support of U.S. Army Pacific operations and national level requirements in the U.S. Indo-Pacific area of operations. Lineage Constituted 1 June 1954 in the Regular Army as Headquarters and Headquarters Detachment, 311th Communication Reconnaissance Battalion Activated 14 June 1954 at Fort Devens, Massachusetts Reorganized and redesignated 16 May 1955 as Headquarters and Headquarters Company, 311th Communication Reconnaissance Battalion (336th Communication Reconnaissance Company [activated 6 August 1952] and 359th Communication Reconnaissance Company [activated 15 August 1944] concurrently reorganized and redesignated as Companies A and B) Redesignated 1 July 1956 as the 311th Army Security Agency Battalion Inactivated 18 December 1957 at Camp Wolters, Texas Headquarters and Headquarters Company activated 15 February 1966 at Fort Wolters, Texas (Companies A and B concurrently disbanded) Inactivated 30 June 1971 at Fort Hood, Texas (Companies A and B reconstituted 21 September 1978 in the Regular Army as the 336th and 359th Army Security Agency Companies - hereafter separate lineages) Headquarters and Headquarters Company, 311th Army Security Agency Battalion, reorganized and redesignated 1 June 1982 as Headquarters, Headquarters and Operations Company, 311th Military Intelligence Battalion, assigned to the 101st Airborne Division, and activated at Fort Campbell, Kentucky (265th Army Security Agency Company [see ANNEX 1] and 101st Military Intelligence Company [see ANNEX 2] concurrently reorganized and redesignated as Companies A and B) Annex 1 Constituted 2 March 1967 in the Regular Army as the 265th Army Security Agency Company Activated 21 April 1967 at Fort Campbell, Kentucky Inactivated 1 April 1972 in Vietnam Activated 21 June 1976 at Fort Campbell, Kentucky Annex 2 Constituted 12 July 1944 in the Army of the United States as the 101st Counter Intelligence Corps Detachment Activated 20 August 1944 in England with personnel from provisional Counter Intelligence Corps detachment attached to the 101st Airborne Division Inactivated 30 November 1945 in France Allotted 7 February 1956 to the Regular Army Activated 25 March 1956 at Fort Campbell, Kentucky Reorganized and redesignated 25 January 1958 as the 101st Military Intelligence Detachment Reorganized and redesignated 26 December 1969 as