On 27 September 1951, the battalion was redesignated as the 23rd Signal Construction Battalion and allocated to the Regular Army. On 02 November the battalion was assigned to the Eighth Army and activated in Korea where it earned five battalion streamers. On 15 May 1953, the battalion was inactivated in Korea. In parallel, the 191st Counter Intelligence Corps Detachment (a predecessor unit of Company "B") was constituted in the Regular Army on 25 September 1950, activated in Korea and attached to support the 1st Cavalry Division.
On 19 May 1955, the battalion was converted and redesignated the 312th Communications Reconnaissance Battalion, activated on 25 June and assigned to Bad Aibling Kaserne, Germany. On 01 July 1956, the battalion was redesignated as the 312th Army Security Agency Battalion.
Two elements of the battalion, Company "A", formally designated as Company "C" 313 Army Security Agency Battalion (later redesignated as 371st Army Security Agency Company) and Company "B", formally the 11th Air Assault Military Intelligence Detachment which was redesignated as the 191st Military Intelligence Detachment (later designated as Company) were deployed to Vietnam with the 1st Cavalry Division (Airborne) in July 1965.
The mission of the 371st Army Security Agency Company was to provide combat information to the Division Commander in pursuit of his mission. The company served well and faithfully, earning two Presidential Unit Citations, four Meritorious Unit Commendations, and one Valorous Unit Award. It was redeployed to Fort Hood, Texas with the division in 1971 were it served with pride until deactivation in October, 1981, with its mission turned over to Company "A", 312th Military Intelligence Battalion upon activation.
The 191st Military Intelligence Company (MIC) had the mission to perform all specialized intelligence and counter intelligence functions requiring the employment of special skills or foreign languages.
The 191st Military Intelligence Company consisted of a company headquarters and four functionally organized operational sections; Order of Battle (OB), Interrogation of Prisoners of War (IPW), Imagery Interpretation (IP) and Counter Intelligence (CI). The company provided tactical commanders, at all levels, with timely intelligence to meet the changing situations created by the mobility of the 1st Cavalry Division.
On 07 January 1967, a 1st Cavalry Division Long Range Reconnaissance Patrol (LRRP) (Provisional) unit was formed under the wing of the 191st Military Intelligence Company. On 02 Feburary, the provisional status was dropped and they were opconned as a Detachment to the Division G2. The information gathered from their first mission was valuable and revealed new locations of the enemy, trails and map correction data. As time passed, the detachment grew in number, including members of the Rhade Tribe Unit and Vietnamese Scouts. In April, they were redesignated as a company level operation and set up camp just west of An Khe. On 20 December, the unit was redesignated as "E" Co, 52nd Infantry and released from the 1st Cavalry Division,
Early in 1968, when the Skytroopers moved to the Northern I Corps, the 191st had its work cut out. All commanders had to be familiarized with the new battle situation. Within two days after the division headquarters made the move, a comprehensive Order of Battle Book of some 100 pages and a distribution of more than 300 copies was made for the U.S. Troops.
One of the primary information of sources for the Information specialist was the Imagery Interpretation section. This section read photographs and data from missions of reconnaissance aircraft. The image interpretators identified numerous enemy targets from aerial photographs. The enemy bunkers and trenches detected were reported to the combat arms for "appropriate action". The analysists also had the capability to interpret infrared and sidelooking airborne radar.
The Counter Intelligence (CI) section teams questioned all prisoners, Hoi Chanh and civilians each month. In July 1969, a debriefing of a Hoi Chanh furnished the division with the information on an enemy plan to attack the Quan Loi basecamp. Data provided the division with the time and routes of attack, units involved and routes of withdrawal. The CI section performed security inspections, validated security clearances and established a net for early warning collection.
On 15 August 1972, having served the 1st Cavalry well, the 191st Military Intelligence Company was inactivated in Vietnam.
With the division stand down in Vietnam, the 371st Army Security Agency Company was redeployed to Fort Hood, Texas with the division in 1971 were it served with pride until deactivation in October, 1981, with its mission turned over to Company "A", 312th Military Intelligence Battalion upon activation.
On 21 June 1975, the 191st Military Intelligence Company was reactivated at Fort Hood, Texas and on 02 July 1977, it was reassigned to the 1st Cavalry Division. It continued to perform its intelligence mission until 01 October 1981, when it was consolidated with the newly activated Company "B" of the 312th Military Intelligence Battalion.
On 06 April 1977, the 312th Military Intelligence Battalion (Provisional) was organized as part of the 1st Cavalry Division. On 01 October 1981, the battalion discontinued its provisional status and became the 312th Military Intelligence Battalion, a separate battalion in support of the 1st Cavalry Division.
It was not until 01 October 1981; that the 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 were concurrently consolidated with the 371st Army Security Agency [See ANNEX - 1] and the 191st Military Intelligence Company [See ANNEX 2]. The consolidated units were designated as "A" and "B" Companies, 312th Military Intelligence Battalion.)
On 07 August 1990, a deployment order for the Southwest Asia operations was issued. The order called for the division to be attached to the XVIII Airborne Corps to reinforce Saudi Arabia and organize for combat operations. Plans calling for the division to deploy by 15 September extended the work day to 14, 16 and in some cases 24 hours. On schedule, by mid September over 800 heavy loaded vehicles were loaded at the Fort Hood railhead to make the trip to the seaports of Houston and Beaumont. An additional 4,200 vehicles formed road conveys that left every two hours, around the clock.
On 16 September, an Air Force C5A Galaxy, carrying the advanced headquarters staff, left Fort Hood Robert Gray Army Airfield. The 312th Military Intelligence Battalion then fought and served proudly in the Persian Gulf War, helping the 1st Cavalry Division and other coalition forces crush the Iraqi Army. The battalion then redeployed to Fort Hood with the "First Team" in April 1991.
Upon return of the 312th Military Intelligence Battalion, it began an extensive program of recovery and modernization. In the past four years, the Battalion has revolutionized tactical intelligence operations for the Army.
Since Desert Storm, the battalion has deployed soldiers seven times to the National Training Center, four times to Kuwait, six times in support of JTF-6 counter-narcotics missions, twice to Somalia, once to Twenty-nine Palms for a joint Army/Marine Exercise, and just recently "Silent Warriors" deployed to Idaho in support of forest fire-fighting.
The 312th reorganized for the "A" Series Military Table of Organization and Equipment (MTOE) on 16 November 1995. The battalion currently consists of a headquarters and headquarters company, a general support company, and three direct support companies.
In 1995, the 1st Cavalry Division and Control Element (ACE) was formed upon the merger of the All Source Production Section (ASPS) from the Division Headquarters and the Tactical Control and Analysis Element (TCAE) from the 312th Military Intelligence Battalion. The 1st Cavalry Division quickly built a reputation for tactical and technical proficiency in support of contingency missions for the 1998-1999 Bosnian-Herzegovina Stabilization Force (SFOR).
On 15 October, upon return from Bosnia, the ACE Detachment, 312th Military Intelligence was formed. Today the Ace Detachment. 312th Military Detachment, using state of the art processors and links to the Division, Corps, Theater and National Intelligence information, provides intelligence support to the Commander 1st Cavalry Division for worldwide contingency operations.
Following a long series of assignments follow - the 312th Military Intelligence Battalion was inactivated on 15 October, 2005 at Fort Hood, TX. and relieved from assignment to the 1st Cavalry Division. This inactivation was in par, due to the transformation of the 1st Cavalry Division to the US Army's modular force structure. As a part of the transformation, assets previously held at division level, but habitually assigned to brigades were made organic to those brigades. Military intelligence elements were integrated into the special troops battalions of the modular Brigade combat teams. "B" Company was reflagged as "A" Company, Special Troops Battalion, 2nd Brigade Combat Team, 1st Cavalry Division.
The 312th Military Intelligence Battalion is one of the most decorated intelligence unit in the Army. As in the past, the Silent Warriors of the 1st Cavalry Division remain ready to answer the nation's call, anytime, any place and under any circumstances.
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