Karel Margry describes Britains first Paratroop Raid on an Italian aqueduct in February 1941. Preservation – Western Approaches Headquarters – The preservation of this wartime headquarters in Exchange Buildings, Liverpool. United Kingdom – Spigot Mortar at St Albans – FRed Nash discovers a relic of Britains invasion defences. United Kingdom (2) – First Base Post Office Martin and Fran Collins visit the site of APO 640 in Sutton Coldfield. Wreck Recovery – Missing, Presumed Killed – Dilip Sarkar’s investigation into the death of Sergeant Eldon Caldwell from the Spitfire Operational Training Unit at Aston Down in January 1943. It Happened Here – Sugamo Prison, Tokyo – John Ginn visits the prison used by the American military for the incarceration and execution of the main Japanese war criminals.