This magazine looks at the training of the aircrew of Bomber Command, some of whom would later form No 617 Squadron; the formation and development of the plan for raid on the dams; how the weapon was designed and tested, and how the Lancaster was adapted to carry the weapon. The magazine also focuses on several of the pilots and their crews who took part in the raid, including some of those who did not make it back.

The success of the Dambuster raids has been somewhat debated in the years since they took place: although the bombs fulfilled their purpose and two of the dams were successfully breached, the attack was costly in lives and did not have the long-term effects that had been hoped on the Ruhr's industrial output. However, as described in the latter chapters of this magazine, it did have enormous propaganda value for the Allies.