The Dams Raid is the RAF's most famous bombing operation of the Second World War, and Guy Gibson, who was in command, its most famous bomber pilot. Of the six men who made up his crew on the Dams Raid – two Canadians, an Australian and three Englishmen – only one had previously flown with him, but altogether the men had previously amassed more than 180 operations. Drawing on rare and unpublished sources and family archives, this new study is the first to fully detail their stories. It explores the previous connections between the seven men who would eventually fly on just one operation together and examines how their relationships developed in the months they spent in each other's company.