Nimitz from 1942 through 1945, while he was Commander-in-Chief, Pacific Fleet and Commander-in-Chief, Pacific Ocean Areas, throughout World War II.
In the other significant field sector in the Pacific area, identified as the southwestern Pacific sector, Allied troops were ordered by US Nimitz. Both MacArthur and Nimitz were supervised by the United States the Westward Allies Combined Chiefs of Staff and Joint Chiefs.
J. Robert Oppenheimer is often called the "father of the atomic bomb" for leading the Manhattan Project, the program that developed the first nuclear weapon during World War II.
