This piece originally ran in the November 2023 issue of EAA Sport Aviation magazine.

When it entered service in 1934, the Martin B-10 was a revolution in bomber design. Faster than many fighters of the day, the B-10 featured an all-metal airframe, enclosed cockpits, an internal bomb bay, and rotating gun turrets, all features that would become standard for bombers of World War II. Rapid advances in aircraft design meant the B-10 was eclipsed by the late 1930s, and only one complete example survives today, making even fragments like this fuel tank rare.