The United States Air Force controls nearly half of the nation's entire nuclear stockpile.

Cultures · Published 29 September 2026 Swipe more like this →

In short: Born from the Army Signal Corps in 1907, the United States Air Force has grown into the world's largest air service. Today, it manages a massive fleet of bombers and fighters, while maintaining a significant portion of the global nuclear arsenal, all to ensure global vigilance, reach, and power.

The United States Air Force officially became an independent military branch on September 18, 1947, following the National Security Act signed that July. While its roots stretch back to the Union Army Balloon Corps and the 1907 formation of the Aeronautical Division, the service spent decades evolving from an Army support unit into a standalone entity. By the time Stuart Symington was sworn in as the first secretary of the Air Force, the organization had already proven its necessity through the massive air campaigns of World War II, where nearly 68,000 airmen lost their lives.

Today, the service operates as the second-largest branch of the Department of Defense, commanding approximately 5,500 aircraft and a workforce of over 320,000 active-duty airmen. Its responsibilities are vast, ranging from rapid global mobility and intelligence gathering to maintaining the world's largest strategic bomber and stealth aircraft fleets. The Air Force is also a cornerstone of American nuclear strategy, managing 400 intercontinental ballistic missiles and over 1,000 nuclear weapons deliverable by air, which together account for 49% of the total United States nuclear inventory.

The Air Force organizes its operations around five core missions: air superiority, global integrated intelligence, rapid global mobility, global strike, and command and control. These functions are designed to provide the United States with the ability to project power anywhere on Earth. Whether through offensive counter-air operations that neutralize threats at their source or aeromedical evacuations that transport wounded personnel, the service maintains a constant state of readiness. This complex infrastructure is overseen by a civilian secretary and a military chief of staff, ensuring that the Air Force remains prepared to defend national interests across all domains.

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