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 such assistance to the Republic of Korea as may be necessary to repel the armed attack and to restore international peace and security in the area." The South Korean capital of Seoul fell on 28 June. The next day, Truman authorized air and naval operations north of the 38th parallel, which MacArthur had already ordered. However it was not until 30 June, following a sobering report on the military situation from MacArthur, that Truman finally authorized the use of ground forces. On 8 July, on the advice on the Joint Chiefs of Staff, Truman appointed MacArthur as commander of the