"We are the pilgrims o'master. We shall go always a little further.beyond that last mountain barred with snow, across that wild and stormy sea

This line is from a poem favoured by the SAS who are always prepared to "go a little further".

Story of the SAS captures the essence of British Special Forces from their conception in the Western Desert during the Second World War to the covert warfare of today. It also looks in depth at the tactics; esprit de corps and hard training that have made the SAS the most feared and admired troops in the world.

The programme looks at how the role of Special Forces has changed since the end of the Cold War including recent deployments to Africa, Asia and the Balkans. From sniping to the urban battleground, we see and hear the experts describe the art of modern warfare.

For the first time, cameras have been allowed into the famed British Jungle training centre in Brunei to follow soldiers through the elite tracking course.

Its hot, dirty, rough and very tough, but is the very essence of what it means to be a soldier in the SAS today.