and partially organized in Massachusetts. Headquarters redesignated and 1st Battalion inactivated 1950, 2nd and 3rd Battalions disbanded 1952. 305th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Indiana. Inactivated 1951 and disbanded 1952. 306th Armored Cavalry Regiment – Converted and redesignated 1948 in the Organized Reserve Corps and activated 1949. Redesignated 306th Armored Cavalry Group 1950. Inherited lineage of prewar 306th Cavalry Regiment. 308th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Minnesota. Inactivated 1950 and disbanded 1952. 309th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Michigan. Inactivated 1950 and disbanded 1952. 310th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized in California. Inactivated 1950 and disbanded 1952. 311th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized later that year in Texas and Louisiana. Inactivated 1950 and disbanded 1952. 314th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Tennessee. Inactivated 1950 and disbanded 1952. 317th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized in Illinois. Inactivated 1950 and disbanded 1952. 320th Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Ohio. Inactivated 1950 and disbanded 1952. 321st Armored Cavalry Regiment – Constituted 1948 in the Organized Reserve Corps and partially organized 1949 in Virginia. Inactivated 1950 and disbanded 1952. See also List of armored regiments of the United States Army Citations Bibliography Neil Baugardner, Tim Aumiller, Armor-Cavalry Regiments (c2005), last updated 20 January 2006 Long Range Component Report. Chapter III: Existing Conditions - MSARNG Tenants. Mississippi, USA: Mississippi Army National Guard Construction and Facilities Management Office. Armored Armoured brigades