Part of the 32nd Infantry Division, the unit was organized under War Department orders of 18 July 1917, from National Guard troops from Wisconsin and Michigan.

The 120th Field Artillery was made up almost entirely from troops of the 1st Wisconsin Cavalry, and the commanding officer of the latter organization.

In 1940, President Franklin Roosevelt established the Mojave Anti-Aircraft Range, a military reservation of approximately 1,000 square miles (2,600 km2) in the area of the present Fort Irwin.

Steven Castner died 24 July 2006 after a roadside bomb attack hit his convoy near Tallil, Iraq.

During this deployment the 276th completed 1090 missions and received the Valorous Unit Award while sustaining the loss of only one soldier to enemy fire.

Ryan C. Adams of 3rd Platoon, 951st Engineer Company, died on 2 October from wounds sustained from an RPG attack on his vehicle.

It commands and controls forces necessary to conduct security and functional operations in a designated area of operations (AO) in order to enable force application, focused logistics, battle space awareness, and protection.A new unit, 357th Network Support Company (NSC), is headquartered in Two Rivers, Wisconsin.

On 3 February 2008, 0930 hours Change of Command of this Brigade was passed from Col. Dominic A. Cariello to Col. Mark Michie.

The combining left the Racine armory vacant and kept the A Btry designation now based out of Sussex, WI.

In 2022, the 157th HSC Company deployed to Djibouti in support of Operation Enduring Freedom - Horn of Africa.

They functioned as the main staff element of Combined Joint Task Force - Horn of Africa from the fall of 2022 to the summer of 2023.