So secret was this mission, the SAS seizure of a train to raid deep into enemy territory to liberate a concentration camp, that it wasn't until 1968 - twenty-seven years after the formation of the SAS - that a short mention of it was made in the Rover and Wizard annual, under the headline 'Who Dares Wins'. No further published record exists.

Best-selling author Damien Lewis has unearthed the full incredible story from long-hidden files and first hand-testimony, his latest elite forces narrative delivering a scintillating tale of bravery, daring and determination which simply beggars belief. This is the SAS at their very finest; there is no other mission like it from the Second World War.