Inside Detroit Arsenal: How 10,000 Workers Built a Tank Factory in 73 Days — And Outproduced Germany

The story of the Detroit Arsenal is one of the most unbelievable—and least told—chapters of World War II. On December 8th, 1941, America discovered a terrifying truth: the United States had fewer than 400 tanks, while Germany had already built 24,000. It wasn’t a tactical gap. It was mathematical doom.

What happened next defied engineering logic, manpower limits, and every known rule of manufacturing.

In just 73 days, an empty field in Michigan became the largest tank factory on Earth. Within months, it was producing one tank every 72 minutes, outbuilding the combined industrial output of Germany, Italy, and Japan.

This cinematic deep-dive reveals:
• How K.T. Keller—an auto executive without formal engineering training—accepted a suicidal deadline and built the impossible
• How 10,000 workers, from teenagers to exhausted welders to women operating cranes, powered a 24/7 war machine
• Why the M3 Lee and the M4 Sherman were both feared and hated by their crews—yet essential to stopping Rommel and breaking through Europe
• The sacrifices, injuries, pressure, and quiet heroism hidden behind every tank that rolled off the line
• How a single American factory reshaped the outcome of WWII through industrial will alone

If you believe forgotten stories of courage, engineering, and sacrifice deserve to be told, subscribe. We uncover the human and mechanical forces that shaped the world—one untold chapter at a time.