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
Secretary-General to the President as president ditched all of McDunphy's rules and in effect started from scratch. Commentators credited the ditching of McDunphy's rules as a key factor in the rebirth of the office and in its subsequent popularity. Though technically the Secretary General to the President is attached to the Department of the Taoiseach in practice he or she is treated as being a full department head in his or her own right. McDunphy however accused the Secretary to the Government and Secretary to the Taoiseach, Maurice Moynihan of plotting to undermine him and take over control of the Office of the President,