In December 2006, Ethiopian troops entered Somalia to assist the TFG against the advancing Islamic Courts Union, initially winning the Battle of Baidoa. On 28 December 2006, the allied forces recaptured the capital from the ICU. The offensive helped the TFG solidify its rule. Ethiopian and TFG forces forced the ICU from Ras Kamboni between 7–12 January 2007. They were assisted by at least two U.S. air strikes. On 8 January 2007, for the first time since taking office, President Ahmed entered Mogadishu from Baidoa, as the TFG moved its base to the national capital. President Ahmed brought his Puntland army chief with him, and Abdullahi Ali Omar became Somali chief of army on 10 February 2007.