The 4th Brigade Combat Team, 1st Infantry Division is an inactive Infantry Brigade Combat Team. Active from 2006 through 2015, the BCT served in Iraq from 2007 to 2008 and from 2009 to 2010, in Afghanistan from 2012 to 2013, and in a variety of theater security cooperation activities in Africa from 2014 to 2015. The BCT was inactivated in 2015 as part of force reductions.