Which date is celebrated as the Air Force Birthday?

The date celebrated as the Air Force Birthday is September 18, 1947. This is significant because it marks the establishment of the United States Air Force as a separate branch of the armed services, following its previous association with the Army. The creation of the Air Force was part of a broader reorganization of the military that aimed to enhance national defense during the post-World War II era. Recognizing this date signifies the formal recognition of the Air Force's unique role and contributions to national security.

The other dates listed do not pertain specifically to the Air Force's founding as an independent entity. For instance, August 4, 1775, is recognized as the birthday of the U.S. Coast Guard, while November 10, 1775, is celebrated as the Marine Corps Birthday. October 13, 1775, refers to the establishment of the U.S. Navy. Each date represents significant milestones for different branches of the U.S. military, but only September 18, 1947, is connected to the creation of the Air Force.