ShieldPer bend Buff and Gules, issuing from partition line to base a rainbow bendsinisterwise throughout Proper and a giant cactus Argent.
CrestThat for the regiments and separate battalions of the California Army National Guard: On a wreath of the colors Argent and Buff, the setting sun behind a grizzly bear passant on a grassy field, all Proper.
MottoSERVICE, THEN SELF.
ShieldThe upper half of the shield is buff, the color of the Quartermaster Corps; the other half with the charges thereon is red to indicate service of the organization with the Corps of Engineers, the cactus symbolizing service on the Mexican Border and the rainbow service in the 42d Division during World War I.
CrestThe crest is that of the California Army National Guard.
The coat of arms was originally approved for the 115th Quartermaster Regiment on 22 April 1938. It was redesignated for the 115th Quartermaster Battalion on 16 June 1942. The insignia was rescinded on 16 November 1976.