Colonel Alan N. Clark was commissioned a Field Artillery Officer upon graduation from Officer Candidate School Class 3-73, 13 August 1973. His first duty assignment was as Wire Platoon Leader, 279th Signal Battalion, Huntsville, Alabama. | His subsequent duty assignments include: Forward /Aerial Observer, Executive Officer, Fire Direction Officer, Battery C, 1st Battalion, 115th Field Artillery Regiment, Shelbyville, Tennessee; Intelligence Officer, 1st Battalion, 115th Field Artillery Regiment, Winchester, Tennessee; Commander, Headquarters and Headquarters Battery, 1st Battalion, 115th Field Artillery Regiment, Winchester, Tennessee; Commander, Battery C, 1st Battalion, 115th Field Artillery Regiment, Operations Officer, 1st Battalion, 115th Field Artillery Regiment, Winchester, Tennessee; Operations/Intelligence Officer, 196th Field Artillery Brigade, Chattanooga, Tennessee; Executive Officer, 1st Battalion,181st Field Artillery Regiment, Chattanooga, Tennessee and Southwest Asia; Personnel Officer, 196th Field Artillery Brigade, Chattanooga, Tennessee; Commander, 1 Battalion, 181st Field Artillery Regiment, Chattanooga, Tennessee; Deputy Director, United States, Training and Doctrine Command, Regional Coordinating Element, Fort Lee, Virginia. Colonel Clark was serving as Director, United States, Training and Doctrine Command, Regional Coordinating Element, Region D, Fort Knox, Kentucky, at the time of his induction.