The 300th Armored Cavalry Regiment (300th ACR) was a Texas-based reconnaissance unit of the United States Army Organized Reserve Corps, which briefly existed after World War II.
[1] In June 1947, the group was commanded by local ice cream manufacturer Colonel C.R.
[2] The regiment's 1st Battalion was redesignated from the 323rd Mechanized Cavalry Squadron on 14 February 1949, which had been first constituted on 3 December 1941 as the 818th Tank Destroyer Battalion and activated on 15 December 1941 at Fort Sill after the United States entered World War II.
It was redesignated as the 323rd Mechanized Cavalry Squadron in the Organized Reserve on 26 February 1947 and activated on 14 March of that year at Dallas.
[1] The 300th ACR was not authorized a coat of arms or distinctive unit insignia.