Final answer:
President Roosevelt appointed General Douglas MacArthur to command the Pacific front in World War II. MacArthur led the Allied Forces in the Southwest Pacific and played a vital role in the Pacific theater and the subsequent reconstruction of Japan.
Step-by-step explanation:
Roosevelt's Appointment of a General for the Pacific Front Command
During World War II, President Roosevelt had to make critical decisions regarding military appointments to lead the U.S. forces. The question refers to who Roosevelt appointed to command the Pacific front of the war. The answer is General Douglas MacArthur, who was Commander-in-Chief of the Allied Forces in the Southwest Pacific Area. MacArthur was a key military figure, assuming command in the Pacific, and leading American and Filipino forces against the Japanese advance. His memorable pledge, "I shall return," became famous after he was ordered to evacuate to Australia, where he would continue as the supreme commander of Allied forces in the Pacific. MacArthur also played significant roles during the reconstruction of Japan and in the Korean War.