In a feat of extreme engineering and precision flying, the RAF's 617 Squadron attacked three major dams in Germany's Ruhr industrial valley. To destroy the dams, which were protected by torpedo nets, engineer Barnes Wallis invented the 'Bouncing Bomb.' These drum-shaped bombs were spun backward at high speed and dropped at a precise altitude of 60 feet. They skipped across the water like a stone to hit the dam wall and sink before exploding. The raid breached two dams, causing catastrophic flooding and disrupting German power and steel production. Though the damage was repaired within months, it was a massive propaganda victory and demonstrated the vulnerability of German industry.