It was redesignated for the 1st Armored Regiment on 7 September 1940 .
Background : The distinctive unit insignia was originally approved for the 1st Cavalry Regiment on 27 November 1923 .
1st Cavalry Regiment was redesignated for the 1st Armored Regiment on 7 September 1940 .
Background : The distinctive unit insignia was originally approved for the 1st Cavalry Regiment on 27 November 1923 .