This is the third in the series, and covers the period July 1941 to February 1943. Coastal Command is expanded, the RAF joins forces with the RCAF and US air forces in the battle against the Uboats, operations continue in european waters, German surface warships are attacked in Brest harbour, anti-shipping warfare goes on, the convoys to Russia are described as is aerial minelaying. The narrative then concentrates on Operation TORCH, finally returning to the anti-Uboat war. Of fundamental importance in any study of the war at sea. Due to its size this volume is printed in two parts.