Adriatic, 1940s... Curtis was the pro. He could steer a sub through a saloon and no one would notice. Duncan was the grumbler, more at home in the Aussie Outback than twenty fathoms under the Adriatic. Jervis was the spit-and-polish man, who knew the correct way to die. And George, the Cockney, was the toughest of them all. Four men in the Royal Navy’s smallest sub, preparing the way for history’s largest invasion.

The year: 1943. Now there was to be no more retreat for Britain and her Allies. At last the war was to be carried into enemy territory. And from captured bases and makeshift harbours in North Africa, the Royal Navy's Special Force was to be the probe and the spearhead of the advance. To this unorthodox war came the corvette H. M. S. Thistle and her commanding officer, John Crispin.

The dramatic sequel to Badge of Glory, China 1900. When the Boxer Rebellion erupts into bloody war. The Royal Marines, true to their motto, are the first to land - and the last to leave. Again, a Blackwood is in command.

It takes a special sort of courage to serve in midget submarines, and Lieutenant David Seaton, commanding officer of XE16, needs no reminding of the perils involved. The little X-craft with their four-man crews have been used against heavy enemy surface units and important harbour installations. But in 1944, with the Allies poised for an invasion through France, a new and more hazardous role is given to Seaton's flotilla.

Hong Kong, 1941... To the residents and defence forces of the Crown Colony of Hong Kong, the war in Europe remains remote. Even the massive build-up of Japanese forces on the Chinese border cannot dent their carefree optimism. Yet one man suspects the truth. Lieutenant-Commander Esmond Brooke, captain of HMS Serpent and a veteran of the cruel Atlantic, sees all too clearly the folly and incompetence of Hong Kong’s colonial administration. To Brooke, attack by Japan seems inevitable.