Lineage. Established as 505 Operations Group on 7 Jan 2004. Activated on 12 Mar 2004. Redesignated as: 505 Test and Evaluation Group on 31 Mar 2011; 505 Combat Training Group on 1 Aug 2019.Assignments. 505 Command and Control Wing, 12 Mar 2004–.Stations. Nellis AFB, NV, 12 Mar 2004–.Service