 From 2009 to 2011, he commanded the 4th Infantry Division at Fort Carson.From 2011 to 2014, Perkins was commander of the Combined Arms Center and commandant of the United States Army Command and General Staff College at Fort Leavenworth.On March 14, 2014, Perkins assumed command of United States Army Training and Doctrine Command (TRADOC) from Robert W. Cone.