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Lesson 14 min 20 XP

Wartime President: FDR and the Arsenal of Democracy

How FDR led the American war effort — industrial mobilization, grand strategy, and the expansion of presidential power.

The Arsenal of Democracy

America's industrial mobilization was staggering in scale. Automobile factories converted to producing tanks, aircraft, and ammunition. Shipyards launched a new Liberty ship every 42 days at peak production. By 1944, the U.S. was producing more war material than all Axis powers combined.

This mobilization finally ended the Depression. Unemployment dropped below 2%, and millions of women entered the workforce — symbolized by 'Rosie the Riveter.' The war also accelerated the Great Migration of African Americans from the rural South to industrial cities in the North and West. FDR established the War Production Board to coordinate industry and used executive power aggressively to manage the economy, including wage and price controls.