Major General Andrew L. Cooley was commissioned an Infantry Officer upon graduation from Officer Candidate School 24 August 1955, class number 5. His first duty assignment was as Tank Platoon Leader, Company A, 44th tank Battalion, 82d Airborne Division. | His subsequent duty assignments include: Company XO, Battalion Operations Officer, Co A, 44th Tank Bn, 82d Abn Div; Platoon Leader, Troop XO, Troop A and B, 3d RCN Sqd, 4th Cav, 25th Inf Div; Company XO, Co A, 3d Bn, 69th Armor, 25th Inf Div; Company Commander, Headquarters Co, 3d Bn, 69th Armor, 25th Inf Div; Assistant Battalion Operations Office, Headquarters, 3d Bn, 69th Armor, 25th Inf Div; Instructor in Tactics, U.S. Army Engineer School, Fort Belvoir, VA; Battalion Advisor, ARepublic of Vietnam Infantry Battalion, U.S. Army Engineer School and USA MACV, Vietnam; Battalion Advisor and operations Officer, USA MACV,  Vietnam; Aide & Assistant Executive to Chief of Staff, SHAPE, Belgium; Battalion Commander, 1st Bn, 64th Armor, 3d Inf Div; DA Staff Officer, Office of DCSOPS, DA, Washington, D.C.; Executive to the DCSOPS, Headquarters, USA Forces Command, Fort McPherson, GA; Brigade Commander, 1st Brigade, 2d Inf Div; Brigade Commander, Division Chief of Staff, Headquarters, 2d Inf Div; Federal Executive Fellow, Brookings Institution, Washington, D.C; Executive Assistant to CINCPAC, Headquarters CINCPAC, Camp Smith, Hawaii. | His awards and decorations include: Silver Star, 2 awards of Republic of Vietnam Cross of Gallantry, ARCOM w/V.