The women of the 588th Night Bomber Regiment of the Soviet Air Forces — better known as the Night Witches — had no radar, no machine guns, and no radios. All they had onboard was a map, a compass, rulers, stopwatches, flashlights, and pencils.

Yet they successfully completed 30,000 bombing raids and dropped more than 23,000 tons of munitions on advancing German armies over the course of four years during WWII.