Upon graduation from Officer Candidate School 25 April 1945, Colonel McClaran was assigned as an instructor with the Weapons Department of the Infantry School at Fort Benning. From 1946-1948 Colonel McClaran served as a Platoon Leader and Battalion S4 the 3d Bn, 18th Infantry Regiment in Europe. From 1949-1950 he served as a Property Book Officer with the South Dakota Military District. 1950-1951 Colonel McClaran served as a Platoon Leader and Company Commander in Company H, 24th Infantry Regiment, Korea. In 1952 he served in consecutive assignments as a Company Commander and S3 with the 1st Bn, 87th Infantry, Fort Riley, Kansas.  In 1953 he served as Executive Officer, 8th Bn, Fort Bliss, Texas. Colonel McClaran graduated from the Associate Infantry Officer Course, the Infantry School, in 1954. 1956-1959 Colonel McClaran served as S3, 3d Bn, 14th Infantry, Assistant S3, 2d Battle Group, 19th Infantry and as S2, 1st Battle Group, 14th Infantry in Hawaii. 1959-1961 Colonel McClaran served as Assistant G3, Headquarters, 1st Infantry Division, Fort Riley, Kansas. 1961-1962 he attended the Command and General Staff College, Fort Leavenworth, Kansas.  In 1963 he served as the G3 Staff, Headquarters, 8th U.S. Army, Korea, 1964-1965 he served as a Plans Officer and as Secretary of the General Staff Headquarters, U.S. Army Supply and Maintenance Command. 1965-1967 he served as Commanding Officer, 1st Bn, 46th Infantry 1st Armored Division. 1967-1970 Colonel McClaran served as Berlin Plans and Operations Officer, Headquarters, European Command. From 1971 to present Colonel McClaran served as Chief Plans Division, Office of the Deputy Chief of Staff for Operations, Headquarters, Continental Army Command. Colonel McClaran’s decorations include the Legion of Merit with Oak Leaf Cluster, Bronze Star Medal with V Device and Oak Leaf Cluster, Army Commendation Medal with Oak Leaf Cluster and the Combat Infantryman’s Badge.