Cal. Gov. Code § 32339
Notwithstanding the provisions of this article, the board of supervisors and the board of supervisors as a governing body of the fire protection districts, may elect to contribute for each member of this system who has entered the armed forces of the United States after June 1, 1940, during war or national emergency proclaimed by the President or an act of Congress providing for peacetime induction or conscription and thereafter returns to active duty as a county forester, fire warden or county fire protection district fireman within ninety days after the termination of such military service, in addition to the contributions required by Sections 32330 and 32331, an amount equal to twice the amount such member would have contributed had he remained in service as a county forester, fire warden, or county fire protection district fireman and received the full salary of the position or positions which he held during the time of such military service.
Ca. Gov. Code § 32339