This volume deals with the first 15 months of the Mediterranean Campaign including the preparations for war and the entry of Italy into the war on 10th June 1940. The Royal Navy's attack on Oran on 3rd July resulted in the sinking of one French battleship and two others damaged with heavy loss of life while another one escaped to France. The attack, three days later on Mers-el-Kebir by carrier aircraft, damaged another French battleship in port. Also covered are the first battles against the Italian fleet at Calabria and Cape Spada which left one Italian battleship damaged and a heavy cruiser sunk. The account ends in August with the first Mediterranean convoy battle to run supplies from Gibraltar to Alexandria - Operation Hat.