President Truman's relief of General Douglas MacArthur purposes is [just temporarily] allied with Soviet Russia." If MacArthur's thesis was accepted, then it followed that expanding the war with China would not provoke a conflict with the Soviet Union. The Joint Chiefs emphatically disagreed, although this contradicted their position that it was Europe and not Asia that was the prime concern of the Soviet Union. Even among Republicans, there was little support for MacArthur's position. On 5 April, Martin read the text of a letter he had received from MacArthur, dated 20 March, criticizing the Truman administration's priorities on the floor of the House. In it, MacArthur had
President Truman's relief of General Douglas MacArthur was no requirement to do so. This began to change after the Spanish–American War, when American military forces started to be deployed overseas in the Pacific, Asia and the Caribbean for extended periods of time. The concept of the theater of war developed during World War II. At such a senior level of command, military and political issues tended to merge. As theater commander in the Southwest Pacific, MacArthur had been accountable to the Australian government as well as his own, making him, in President Roosevelt's words to him, "an ambassador as well as Supreme Commander." MacArthur's less than wholehearted