Significant events during this deployment included the resumption of attacks by the Sadrist movement and other Iranian-backed militia, the subsequent operations that stopped those attacks, the rearward passage of lines of USD-North as they redeployed through Baghdad, the organization and training of divisional field artillery regiments for the IA divisions, the fielding of M1 tanks for the 9th IA Division, and the hand-over of all US facilities within Baghdad to the Government of Iraq or elements of the US State Department. During this deployment the brigade simultaneously trained ISF units to the point of conducting Iraqi-led battalion CALFEXs, advised ISF units as they conducted hundreds of Iraqi-led raids which disrupted the attacks of Iranian-backed militia, while also conducting unilateral and combined force protection operations to ensure the security of US bases and redeploying US forces. The brigade experienced nine KIAs during this deployment, the majority of which resulted from a single IRAM attack (improvised rocket-assisted munition) conducted against JSS Loyalty by Iranian-backed militia on 6 June 2011. The brigade departed Iraq in November 2011 after having turned the majority of the city of Baghdad over to complete Iraqi control.