An illustrated study of RAF Coastal Command’s deployment of the Beaufighter against German supply lines in 1941 and the long-running ‘arms race’ with Kriegsmarine Flak ships that followed. Crucial German shipping lines faced a new threat in 1941 when RAF Coastal Command debuted the iconic long-range Beaufighter. The aircraft and its subsequent Mk VIC and Mk X versions gave the Allies a tough, relatively fast and very hard-hitting platform for air attack on German convoys, and so it became essential for the Kriegsmarine to fit ever-heavier anti-aircraft batteries to its escort vessels, and even to develop specialist Flak vessels. In this compelling study, naval aviation historian Matthew Willis chronicles the little-explored arms race that saw RAF Coastal Command and the Kriegsmarine engaged in a fierce battle of one-upmanship until war’s end. New artwork, rare archive photography and contemporary records of Beaufighter operations add depth to fascinating historical accounts, including