Notwithstanding the provisions of Kan. Stat. Ann. §§ 74-4913 to the contrary, any county employee who first became a member of the Kansas public employees retirement system on January 1, 1969, the county’s entry date, having first been employed by another participating employer on January 3, 1934, and who was granted military leave without pay commencing March 1, 1942, and served with the army of the United States until October 5, 1945, and was returned to service with said participating employer on November 20, 1945, shall receive prior service credit for all prior service with all participating employers and for said military service with the army of the United States.