In March 2006, as 3rd Battalion 8th Marines arrived to replace 3/7, violence again began to escalate in Ramadi, with U.S. casualties spiking. With the 2–69th gone, the 2–28th BCT was again reinforced to help damp the insurgent activity. This time by the 1–506th Infantry, who arrived in December 2005 as a unit of the 101st Airborne Division that was transferred to Ramadi from Baghdad's Sadr City.