The Special Air Service is the world's most famous combat unit with the motto 『Who Dares Wins' - but the story of how it came into existence has been, until now, a closely guarded secret. Now, 75 years after it all began, the SAS has agreed to open up its archive for the first time and allow journalist and best-selling author Ben Macintyre (Operation Mincemeat, Agent Zigzag) to...