 The 5th Infantry performed occupation duty in Austria and Germany for a year after the war, and was inactivated in November 1946.The regiment reactivated in South Korea on 1 January 1949, with personnel and support units from the departing 7th Infantry Division.It constituted the core of the 5th Infantry Regimental Combat Team (RCT) with the mission to provide security while all U.S. troops were withdrawn from the country.