The 45th Infantry Brigade was formed from existing elements of the disbanded 45th Infantry Division which had seen extensive action during World War II and the Korean War. The 45th Infantry Brigade was activated in 1968 and assigned to training duties for active duty army units until 1994 when the 45th was selected as one of 15 Separate Enhanced Infantry Brigades. In 1999, the brigade deployed two companies (A/1-179 and C/1-179) as part of the UN peacekeeping force in the wake of the Bosnian War. In 2003, A/1-179th Infantry deployed to Saudi Arabia while B/1-179th deployed to Kuwait to provide security for Patriot missile sites. During the invasion of Iraq, B/Company 1–179th pushed North of Baghdad establishing a foothold in Taji, Iraq. Later that year, the 45th Infantry Brigade deployed to Afghanistan to train soldiers of the Afghan National Army which was followed by another brigade deployment to Iraq, in 2007, to assist in turning over of American military bases to Iraqi forces. A third brigade deployment to Afghanistan in 2011, saw the brigade assigned full-spectrum operations for the first time since the 1950s.