Colonel Keimeth R. Crook was commissioned an Medical Service Corps Officer upon graduation from Officer Candidate School Class 1-77, 3 March 1977. His first duty assignment was as Logistics Services Officer, 4th Combat Support Hospital, Fort McClellan, Alabama. | His subsequent duty assignments include: Company Commander, 4th Combat Support Hospital, Fort McClellan, Alabama; Section Leader, 63'' Medical Detachment (Air Ambulance), Landstuhl, Germany; Aide-de-Camp, Commanding General, 7th Medical Command, Heidelberg, Germany; Aide¬de-Camp, Commanding General, Health Services Command, Fort Sam Houston, Texas; Operations Officer, Executive Officer, and later the Commander, 57th Medical Detachment (Air Ambulance), Fort Bragg, North Carolina; Brigade Aviation Officer and Southwest Asia Plans Officer, 44th Medical Brigade, Fort Bragg, North Carolina; Healthcare Administrator, Blanchfield Army Community Hospital, Fort Campbell, Kentucky; Company Commander, 498th Medical Company (Air Ambulance), Fort Benning, Georgia; Chief Current Operations Branch, Director of Military Support, Office of the Deputy Chief of Staff for Operations, The Pentagon, Washington, D.C.; Battalion Commander, 421st Medical Battalion (Evacuation), Wiesbaden, Germany; Assistant Chief of Staff for Security, Plans, Operations, Intelligence, and Training, G-3, 30t1 Medical Brigade, Heidelberg, Germany; Brigade Commander, Center Brigade, Army Medical Department Center and School, Fort Sam, Houston, Texas.