Gules, in chief fesswise a sun in splendor of twelve rays (the 40th Division shoulder sleeve insignia) and a fleur-de-lis Or, in base a rattlesnake coiled to strike, of the like.
That for the regiments and separate battalions of the California Army National Guard: On a wreath of the colors Or and Gules, the setting sun behind a grizzly bear passant on a grassy field all Proper.
FACTA NON VERBA (Deeds Not Words).
The gold sun is the shoulder sleeve insignia of the 40th Division; the rattlesnake represents the service on the Mexican Border and the fleur-de-lis the service in France.
The crest is that of the California Army National Guard.
The coat of arms was originally approved for the 143d Field Artillery Regiment, California National Guard on 18 March 1925. It was amended to change the design of the shield on 3 November 1925. It was redesignated for the 143d Field Artillery Battalion, California National Guard on 30 July 1942. The insignia was redesignated for the 629th Field Artillery Battalion, California National Guard on 11 October 1951. It was redesignated for the 143d Artillery Regiment, California National Guard on 1 March 1961. The insignia was redesignated for the 143d Field Artillery Regiment, California Army National Guard on 9 August 1972.