Born on January 22, 1921, in Lowell, MA, he prepared for college at the Third Gymnasium in Thessaloniki, Greece, and during World War II served in the U.S. Army Air Force, attaining the rank of second lieutenant. He entered Bowdoin in 1945, became a member of Alpha Tau Omega Fraternity, and graduated in 1947 cum laude as a member of the Class of 1949. He did graduate work at the Russian Institute of Columbia University, receiving the Certificate of the Russian Institute and a master of arts degree in 1949. As an Air Force career officer from 1947 to 1967, he was an air attaché, a staff intelligence and operations officer, a personal pilot for the commanding officer of NATO at Izmir, Turkey, and chief of the military environment division of the Air Command and Staff College, retiring as a lieutenant colonel. He earned a doctor of philosophy degree from Georgetown University in 1967 and a second Ph.D. degree in 1973 from Columbia University, with a major in history and a minor in political science and international relations. After his retirement from the Air Force, he taught history at Elmira College in New York for ten years, and at the American College (Deree College) in Athens, Greece, for ten years. He was awarded the Distinguished Flying Cross and the Air Medal with four Oak Leaf Clusters. During his career with the Air Force, he assisted with the establishment of a number of overseas programs for the University of Maryland and taught in Libya, Turkey, Germany, and Greece, for which he was awarded a Certificate of Merit by the president of the University of Maryland in 1990. He also graduated with honors from the Air Command and Staff College, the Air War College, and the Industrial College of the Armed Forces. Surviving are his wife, Margaret Boobyer Tatsios, whom he married in 1945; three daughters, Anna T. Stocker of Trumbull, CT, Helen Tatsios, and Georgia Tatsios Saviola ’82 of Los Angeles, CA; a brother, John D. Tatsios ’47 of Dracut, MA; and several grandchildren, including Theodore A. Stocker ’98 of Somerville, MA.