MacArthur was Supreme Commander for the allied powers in the Pacific.麦克阿瑟将军曾是太平洋战区盟军的最高统帅。They fought in the Pacific theater of World War II.他们在第二次世界大战的太平洋战区打过仗。It was in the Pacific theater of the war that the US won its first major victories.美国初次赢得重大胜利是在太平洋战区。