 Within 48 hours of the attack on Pearl Harbor, the regiment moved to the San Diego area and took up defensive positions for the expected attack or invasion of the West Coast of the United States.The regiment was scattered throughout a number of areas including Del Mar, La Mesa, and Lindbergh Field, while Company A was sent to San Clemente Island.If the Japanese attack had occurred, this lone company of Sacramentans would have been decimated since there was no avenue of retreat or reinforcement.