On a blue rectangular background with rounded top and bottom 3 1/16 inches (7.78 cm) in height and 2 1/16 inches (5.4 cm) in width overall, with a 1/8 inch (.32 cm) white edge the figure "1" in white, 1 3/4 inches (4.45 cm) in height.
The blue represents Infantry. The figure "1" denotes the numerical designation of the Brigade.
The shoulder sleeve insignia was approved on 17 August 1959. It was rescinded on 13 November 1964. (TIOH Dwg. No. A-1-290)