President Truman's relief of General Douglas MacArthur creation of a professional military. This made civilian control increasingly problematic when coupled with the constitutional division of powers between the President as commander-in-chief, and the Congress with its power to raise armies, maintain a navy, and wage wars. In relieving MacArthur for failing to "respect the authority of the President" by privately communicating with Congress, Truman upheld the President's role as pre-eminent. Harry S. Truman became President of the United States on the death of Franklin D. Roosevelt in 1945, and won an unexpected victory in the 1948 presidential election. He was the only president who served after 1897
President Truman's relief of General Douglas MacArthur success of Inchon was so great and the subsequent prestige of General MacArthur was so overpowering," Collins later recalled, "that the Chiefs hesitated thereafter to question later plans and decisions of the general, which should have been challenged." In response to a rumor that the Eighth Army planned to halt at the 38th parallel and await United Nations authorization to cross, Marshall sent a message to MacArthur informing him that: "We want you to feel unhampered tactically and strategically to proceed north of 38th parallel. Announcement above referred to may precipitate embarrassment in the UN where evident desire is not