Colonel James C. Martin was commissioned an Infantry Officer upon graduation from Officer Candidate School, Class 390-45, 13 January 1945. His first duty assignment was as Platoon Leader, 346th Infantry Regiment, 87th Infantry Division, European Theater of Operations. | His subsequent duty assignments include: Platoon Leader, 8th Infantry Regiment, 4th Infantry Division, Camp Butner, North Carolina; Platoon Leader, Executive Officer, and Company Commander, 33d Infantry Regiment, 1st Infantry Battalion, Fort Gulick, Canal Zone, Panama; Battery Commander, 96th Antiaircraft/Artillery Gun Battalion, Fort Bliss, Texas; Executive Officer, Headquarters Company, Second Army, Fort Meade, Maryland; Company Commander, 14th Infantry Regiment, 25th Infantry Division, Republic of Korea; Intelligence Staff Officer, G-2 Section, Headquarters, X Corps, Republic of Korea; Instructor, Weapons Department, Infantry School, Fort Benning, Georgia; Assistant Professor, Department of Foreign Languages, US Military Academy, West Point, New York; Commander, 55th Military Intelligence Detachment, Vietnam; Senior Intelligence Officer, Chief, World-Wide Division, and Chief, Scientific and Technical Division, Office of the Assistant Chief of Staff for Intelligence, Department of the Army, Washington, D.C.;  Deputy G-2, Headquarters, Eighth U.S. Army, Republic of Korea; Head, Language Department, Deputy Director of Training, National Security Agency, Fort Meade, Maryland.