Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd president of the United States from 1945 to 1953, succeeding upon the death of Franklin D. Roosevelt after serving as vice president. Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd president of the United States from 1945 to 1953, succeeding upon the death of Franklin D. Roosevelt after serving as vice president. He implemented the Marshall Plan to rebuild the economy of Western Europe, and established the Truman Doctrine and NATO. Truman grew up in Independence, Missouri, and during World War I was sent to France as a captain in the Field Artillery. When the United States entered World War I, Truman rejoined Battery B, successfully recruiting new soldiers for the expanding unit, for which he was elected as their first lieutenant. Before deployment to France, Truman was sent for training to Camp Doniphan, Fort Sill, near Lawton, Oklahoma when his regiment was federalized as the 129th Field Artillery.