Martin B-57 Canberra

The Martin B-57 Canberra was a twin-engine jet light bomber adopted by the United States Air Force in the 1950s. It was notable as a foreign design produced under license in America: the original English Electric Canberra, a highly successful British jet bomber, was built by the Glenn L. Martin Company. This marked an unusual decision for the United States to manufacture a British aircraft, the first such arrangement in decades.

The Air Force designated the type the B-57 and acquired several hundred of the aircraft. The Canberra offered good altitude performance, range, and a versatile bomb load, making it useful as a tactical bomber and, in specialized high-altitude reconnaissance variants, as a strategic intelligence platform. American versions were progressively modified from the British baseline to suit U.S. requirements.

The B-57 saw extensive combat service during the Vietnam War, flying bombing and interdiction missions. Specialized reconnaissance and research versions, with greatly extended wings for very high altitude flight, remained in service long after the bomber variants were retired, underscoring the adaptability of the original Canberra design.