General (GEN) Lloyd Austin served as Commanding General, United States Forces-Iraq (USF-I) from 1 September 2010 to 18 December 2011.

1 January 2010 – The major commands Multi-National Force – Iraq (MNF-I), Multi-National Corps – Iraq (MNC-I) and Multi-National Security Transition Command – Iraq (MNSTC-I) merged into the unified command United States Forces – Iraq (USF-I), reducing the total number of staff positions by 41%. (Approximately 112,000 U.S. troops in Iraq)

1 September 2010 – American forces ceased all combat operations, i.e. patrolling, serving arrest warrants, route clearance, etc., and transitioned to a pure advise, train and assist role. Operation Iraqi Freedom is officially concluded, and the advise and assist mission continues under Operation New Dawn.  (49,700 U.S. troops in Iraq)