The 4th Regimental Combat Team was activated 1 October 1948 at Fort Lewis, Washington.  Ulitmately, the 4th RCT would be assigned to the Alaskan Defense Command to provide ground security for the Strategic Air Command (SAC) bases.

The 4th Infantry was the core organzization from which the combat team was built around.  The 4th Regimental combat team served in Alaska from 1949 to 1955.  After 1955 it was transfered to Fort Devins and then in 1957 was inactivated when the Army adopted the "Battle Group" system.  The regiment was then re-titled the 2nd Battle Group, 4th Infantry and assigned to the 3rd Infantry Division in Germany around 1961. 

 The various units which constitute the 4th Regimental Combat Team were as follows:

-4th Infantry Regiment

-36th Field Artillery Battalion

-501st Quartermaster Service Company

-63rd Signal Service Company

-26th Ordnance Service Company

-517th Engineer Combat Company

-59th Engineer Construction Company