Disc 1: Most decorated: the doughboys -- WW1: death of glory -- Secrets of WWI. Disc 2: The first dogfighters -- Red Baron and the wings of death -- Airships -- Mystery U-boat of WWI. Disc 3: WWI: Jutland -- WWI: the Somme -- Halt U-boats in Zeebrugge -- John J. Pershing: the iron general. Disc 4: Dear home: letters from WWI -- Christmas truce -- Last day of WWI.