The 4th Fires Brigade, also known as the "Iron Gunners" was the former 4th Infantry Division Artillery, and was the fire support brigade for the 4th Infantry Division of the United States Army (also referred to as DIVARTY, for "Divisional Artillery"). On 16 April 2007 the 4th Fires Brigade, (formerly 4th Infantry Division's DIVARTY) reflagged as the 41st Fires Brigade. They are based out of Fort Hood, Texas and their assets included the M270A1 Multiple Launch Rocket System (MLRS).