Heraldry and Insignia of the California National Guard
250th Air Defense Artillery Regiment (First California)
250th Artillery (First California)
728th Antiaircraft Artillery Battalion
250th Coast Artillery Regiment (First California)
Distinctive Unit Insignia
Design Approved: Originally Approved for the 250th Coast Artillery on 5 August 1925
Symbolism: The shield is red for artillery. The castle is for service during the War with Spain; the palm tree is for the Phillippine Insurrection and the wreathed fleur-de-lis commemorates service in France during World War I.
Motto: ORAM OCCIDENTALEM DEFENDIMUS (We Defend The Western Coast)