Watch Their Finest Hour

The aircrews had been trained for months to carry out this most daring and courageous of raids. Against a storm of anti-aircraft fire, they calmly flew their bombers in across the reservoirs, holding a specific height and speed, to deliver their strange cylindrical bouncing bombs, to explode against the face of the dams, and blow great holes in them.

Their Finest Hour is a 1991 military and war movie with a runtime of 39 minutes.