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.

Damien Gavin Lewis is a British author and filmmaker who has spent over twenty years reporting from and writing about conflict zones in many countries. He has produced twenty films and has written over fifteen books, some of which have been published in over thirty languages