Step inside the hidden areas where history was steered in secret. From Churchill's wartime bunker — complete with a direct line to FDR concealed inside his private bathroom — to a Soviet weapons base in the desert.

A French Resistance operative hides explosives in baguettes to cripple a Nazi factory, an American soldier parachutes behind enemy lines to destroy critical supply routes, and Ukrainian forces deploy AI-guided drones to strike a Russian bomber fleet.