 Initially at Buckley Field, it was relocated to Denver on 3 September of that year.Due to a reduction of National Guard regimental combat teams, the Colorado National Guard combat units converted to artillery on 1 August 1955, with the regimental headquarters company of the 157th becoming the headquarters and headquarters battery of the 169th Field Artillery Group.In addition to the 157th, the 199th Engineer Battalion and 193rd Tank Battalion also converted to artillery.