When was the separate and independent Department of the Air Force established?

The establishment of the separate and independent Department of the Air Force occurred on July 26, 1947. This date marks a significant moment in U.S. military history as it signified the official creation of the Air Force as a distinct branch of the armed services, separate from the Army, after World War II. This move was part of a broader effort to reorganize the military and reflect the increasing importance of air power. The National Security Act of 1947 provided the legislative framework for this establishment, leading to the Air Force gaining autonomy over its operations, training, and procurement, which was essential for its development as a key component of national defense strategy.