The 1st Battalion, 120th Field Artillery Regiment, also known as the "Red Fox" Battalion came into being on 22 September 1917 at Camp MacArthur, Waco, Texas as part of the 57th Field Artillery Brigade, better known as the Iron Brigade. The 120th Field Artillery Regiment previously had been the 1st Wisconsin Cavalry. The history of the 1st Wisconsin Volunteer Cavalry Regiment goes back the American Civil War days.