In March 1943 the 24th CA Regiment was reduced to a battalion. In December 1943-January 1944 elements of the unit returned to the US for inactivation. In October 1944 the unit was reorganized, but was not fully inactivated until 8 September 1945. The date the unit was transferred to the US for inactivation is unclear. Postwar, circa 1946 the coast defence batteries were inactivated. The 6-inch guns of Batteries 281 and 282 survive. Battery 282's guns are still in place, and in 1993 Battery 281's guns were moved to Fort Columbia in Washington state, US.