Today the Force Structure and Unit History Branch continues the work begun by the Historical Section of the Army War College. The branch maintains historical information on active and inactive units in all components - Regular Army, Army Reserve, and Army National Guard, and prepares official Lineage and Honors Certificates. On the basis of research in primary and secondary material, the certificates outline the major organizational changes undergone by the unit and provide a list of the official battle honors (campaign credit and decorations) that the unit has earned. The information contained on the certificates is reformatted for publication in the Army Lineage Series

While it would take a book to recount the rich history brought about by the changes of each unit in the 312th Military Intelligence Battalion, an overall look at the major reorganizational elements of the Battalion Lineage presents a picture of an organization that was accustomed to fighting and brought strength from change.

312th Military Intelligence Battalion Lineage/DateLine

31 December 1943; Constituted in the Regular Army as 23rd Signal Construction Battalion. 10 February 1944; Activated at Camp Pickett, Virginia. 24 April 1944; Reorganized and redesignated as 23rd Signal Light Construction Battalion. 21 August 1945; Reorganized and redesignated as 23rd Signal Heavy Construction Battalion. 22 January 1946; Inactivated at Fort Lawton, Washington. 27 September 1951; Redesignated as the 23rd Signal Construction Battalion and allocated to the Regular Army. 02 November 1951; Activated in Korea. 15 May 1953; Inactivated in Korea. 19 May 1955; Converted and redesignated as the 312th Communication Reconnaissance Battalion. 25 June 1955; Headquarters and Headquarters Company activated in Germany. 01 July 1956; Redesignated as the 312th Army Security Agency Battalion. 15 October 1957; Headquarters and Headquarters Company inactivated in Germany. 01 October 1981; 312th Army Security Agency redesignated as the 312th Military Intelligence Battalion, assigned to the 1st Cavalry Division, and activated at Fort Hood, Texas. ("A" and "B" Companies concurrently consolidated with the 371st Army Security Agency [See ANNEX 1] and the 191st Military Intelligence Company [See ANNEX 2] and consolidated units designated as "A" and "B" Companies, 312th Military Intelligence Battalion.) 15 October 2005; Inactivated at 1at Fort Hood, Texas, and relieved from assignment to the 1st Cavalry Division. ANNEX 1 11 May 1962; Constituted in the Regular Army as "C" Company. 313th Army Security Agency Battalion. 25 May 1962; Activated at Two Rocks Ranch Station, California. 15 October 1966; Reorganized and redesignated as the 371st Army Security Agency. ANNEX 2 25 September 1950; Constituted in the Regular Army as the 191st Counter Intelligence Detachment. 06 October 1950; Activated in Korea. 24 June 1956; Inactivated in Korea. 15 October 1957; Activated in Korea. 15 May 1959; Reorganized and redesignated as the 191st Military Intelligence Detachment. 26 December 1969; Reorganized and redesignated as the 191st Military Intelligence Company. 15 August 1972; Inactivated in Vietnam. 21 June 1975; Activated at Fort Hood, Texas. 02 July 1977; Assigned to the 1st Cavalry Division.

The history of the 312th Military Intelligence Battalion recorded the following significant events occurring on the dates listed.

312th Military Intelligence Battalion DateLine

1943 Constituted in the Regular Army as 23rd Signal Construction Battalion. (31 December) 1944 23rd Signal Construction Battalion activated at Camp Pickett, Virginia. (10 February) 1944 23rd Signal Construction Battalion reorganized and redesignated as 23rd Signal Light Construction Battalion. (24 April) 1945 23rd Signal Light Construction Battalion reorganized and redesignate as 23rd Signal Heavy Construction Battalion. (21 August) 1946 23rd Signal Light Construction Battalion inactivated at Fort Lawton, Washington. (22 January) 1950 Constituted in the Regular Army as the 191st Counter Intelligence Detachment. (25 September) 1950 191st Counter Intelligence Detachment activated in Korea. (06 October) 1951 23rd Signal Light Construction Battalion redesignated as the 23rd Signal Construction Battalion and allocated to the Regular Army. (27 September) 1951 23rd Signal Construction Battalion activated in Korea. (02 November) 1953 23rd Signal Construction Battalion inactivated in Korea. (15 May) 1955 23rd Signal Construction Battalion converted and redesignated as the 312th Communication Reconnaissance Battalion. (19 May) 1955 Headquarters and Headquarters Company, 312th Communication Reconnaissance Battalion activated in Germany. (25 June) 1956 191st Counter Intelligence Detachment inactivated in Korea. (24 June) 1956 312th Communication Reconnaissance Battalion, redesignated as the 312th Army Security Agency Battalion. (01 July) 1957 Headquarters and Headquarters Company inactivated in Germany. (15 October) 1957 191st Counter Intelligence Detachment activated in Korea. (15 October) 1959 191st Counter Intelligence Detachment reorganized and redesignated as the 191st Military Intelligence Detachment. (15 May) 1962 Constituted in the Regular Army as "C" Company 313th Army Security Agency Battalion. (11 May) 1962 "C" Company, 313th Army Security Agency Battalion activated at Two Rocks Ranch Station, California. (25 May) 1966 "C" Company, 313th Army Security Agency Battalion reorganized and redesignated as the 371st Army Security Agency. (15 October) 1969 191st Military Intelligence Detachment reorganized and redesignated as the 191st Military Intelligence Company. (26 December) 1972 191st Military Intelligence Company inactivated in Vietnam. (15 August) 1975 191st Military Intelligence Company activated at Fort Hood, Texas. (21 June) 1977 191st Military Intelligence Company assigned to the 1st Cavalry Division. (02 July) 1981 312th Army Security Agency Battalion redesignated as the 312th Military Intelligence Battalion, assigned to the 1st Cavalry Division, and activated at Fort Hood, Texas. ("A" ans "B" Companies concurrently consolidated with the 371st Army Security Agency [See ANNEX 1] and the 191st Military Intelligence Company [See ANNEX 2] and consolidated units designated as "A" and "B" Companies, 312th Military Intelligence Battalion.) (01 October) 2005 Inactivated at 1at Fort Hood, Texas, and relieved from assignment to the 1st Cavalry Division. (15 October)