After the American entry into World War I, the unit was drafted into Federal service on 5 August 1917 and on 24 September became Company B of the 157th Infantry Regiment, part of the 40th Division.

[1] When the Colorado National Guard was reestablished postwar, the Denver unit became Headquarters Company of the 2nd Battalion, 157th Infantry and was reorganized and Federally recognized on 26 November 1923.

The Colorado Army National Guard was revived and on 8 January 1947 the regimental headquarters company was reorganized and Federally recognized.

Group executive officer Lieutenant Colonel Felix L. Sparks succeeded Ehrlich in July 1959 when the latter advanced to command of the Colorado Army National Guard.

The 110-strong group headquarters was ordered into active Federal service on 1 October 1961 as part of the American reaction to the Berlin Crisis of 1961, and sent to Fort Sill.

[14] The brigade was deployed for Operation Inherent Resolve between 13 December 2016 and 11 September 2017, controlling field artillery battalions of Central Command.

[16] The 169th Field Artillery Brigade (169th FAB) is headquartered at Buckley Space Force Base, Aurora, Colorado,[17] with units under the Colorado Army National Guard and additional battalions aligned under 169th FAB from Pennsylvania, Wisconsin, and Michigan: Three additional field artillery battalions of the brigade are under administrative control of other formations: The 169th brigade headquarters is entitled to the following campaign streamers and decorations for the 157th Infantry Regiment, which was awarded one campaign streamer in World War I and eight campaign streamers and one unit decoration in World War II.