2003. The 1st Cavalry relieved the 1st Armored Division in Baghdad. Among its subordinate formations were: Louisiana's 256th Infantry Brigade; Arkansas' 39th Infantry Brigade; element of A Company, 28th Signal Battalion; elements of Washington's 81st Armored Brigade; and the 2d Battalion, 162nd Infantry (Oregon Army National Guard), and Company E (Air Traffic Control Services), 126th Aviation, MA ARNG. After spending more than a year in Iraq, it redeployed back to the US by April 2005. It was relieved by the 3d Infantry Division. Division Artillery (DIVARTY) was organized as the 5th BCT. It contained HHB, DIVARTY; 1–7 CAV; 1–8 CAV; 1–21 FA; and the 515th FSB (Provisional). The division fought in many key battles against insurgents, including the Second Battle of Fallujah in 2004, where the 2nd Brigade Combat Team engaged in house to house intense urban combat to root out enemy cells in the city. During its OIF2 deployment division assigned and attached personnel numbered approximately 40,000. 168 personnel were killed in action, with approximately 1,500 wounded. The division assumed duties as Headquarters, Multi-National Division – Baghdad from November 2006 to December 2007. 4th Brigade Combat Team, activated in 2005, arrived in Ninawa Governorate in October and November 2006. However, 2–12 Cavalry was detached, deployed to Baghdad to augment the division efforts there. The 3d Brigade Combat Team, "Greywolf", deployed to the Diyala Province in September 2006 and fought in the Battle of Baqubah as a part of the Iraq War troop surge of 2007. The division assumed duties as the Headquarters, Multi-National Division – Baghdad Jan 2009– Jan 2010. The deployment was extended by 23 days past the one year mark. The 4th Brigade Combat Team "Long Knife" deployed to Mosul, Nineva Province, September 2010 to September 2011. Operation Enduring Freedom – Afghanistan (2001–2014) In November 2001, elements of the 1st Cavalry Division (3d Platoon, 545th MP CO, originally assigned to 2d Brigade "BlackJack" 1st Cav) deployed to Bagram Airfield, Afghanistan as part of Operation Enduring Freedom – Afghanistan. In May 2011, the division headquarters deployed in support of Operation Enduring Freedom and assumed command of Regional Command East, replacing the 101st Airborne Division (Air Assault). The 1st Infantry Division HQ took command of RC-East on 19 April 2012. In June 2014, the division headquarters returned to Afghanistan and assumed command of Regional Command South, replacing the 4th Infantry Division. In October 2014, the division flag returned to