In 1944, Arnold was named a five star general. As commander, he traveled across the world to visit personally with his troops. He was also part of the negotiations at Tehran between the United States, the United Kingdom, and the Soviet Union. Arnold ordered and oversaw the extensive firebombing of Japan prior to the atomic bombings of Hiroshima and Nagasaki. He also helped ensure that Project Silverplate obtained all necessary materials and supplies.
Historians continue to debate whether Arnold favored or opposed the atomic bombings. Revisionists point to an interview on August 17, 1945, in which Arnold stated, "The Japanese position was hopeless even before the first atomic bomb fell, because the Japanese had lost control of their own air." On the other hand, it does not appear that Arnold conveyed any reservations about the bombs' use before Hiroshima and Nagasaki. Because he oversaw strategic bombing, Arnold likely wanted to emphasize its role in ending the war.
