3ID2BCTS

In July 2004, the 3rd Infantry Division (Mechanized) began transformation to the US Army's new modular force structure. As a result its brigades were reorganized and redesignated as Brigade Combat Teams. The 2nd Brigade Combat Team retained 1-64th Armor, and initially 3-15th Infantry. 4-64th Armor was inactivated and reactivated assigned to the newly activated 4th Brigade Combat Team. E Troop, 9th Cavalry Regiment was inactivated and reflagged as the core component of the reactivated 6th Squadron, 8th Cavalry Regiment, also part of the 4th Brigade Combat Team. In 2006, 3-15th Infantry was reflagged as 1st Battalion, 30th Infantry. The modular shift also saw the addition of previously habitually assigned elements as organic units to the Brigade Combat Team, such as 1-9th Field Artillery and the 26th Brigade Support Battalion (redesignated and reorganized from the 26th Forward Support Battalion). Elements of the 10th Engineer Battalion, 103rd Military Intelligence Battalion, and 123rd Signal Battalion, as well as the 3rd Military Police Company, which were all inactivated, were reflagged as elements of the 2nd Brigade Special Troops Battalion. The Brigade Combat Team also gained a cavalry squadron, the 3rd Squadron, 7th Cavalry Regiment, previously the Divisional Cavalry Squadron.