8. The Dambuster Raid Caused Significant Damage and Boosted Allied Morale
Guy Gibson made his attack run against the Mohne Dam, then flew his Lancaster across the dam to draw antiaircraft fire while other bombers made their approaches. One bomber was lost and another damaged, but the dam was finally breached after the fifth bombing run. Gibson then led the Lancasters that still had bombs to the Edersee dam. It was undefended, but the angle of approach was difficult, and was made even more hazardous by fog. After repeated aborted runs, it was finally breached. The attack on the Sorpe dam failed.

Flooding from the breached dams killed about 1700 civilians, of whom 1000 were forced laborers. The greatest impact was the loss of hydroelectric power in the Ruhr for two weeks, as two power stations were destroyed and seven more damaged. Coal production also dropped, declining by 400,000 tons that month. The damage was temporary, however: within two months, Ruhr production was back to normal. Still, the raid boosted British morale as an impressive feat of enterprising derring-do. Guy Gibson was awarded a Victoria Cross, and 617 Squadron, known thereafter as the “Dam Busters”, went on to fly further successful special raids.