The SAS has always shrouded itself in secrecy. Its men regularly undertake some of the most dangerous missions imaginable in war zones around the world. But the world's finest elite fighting force prefers to operate strictly out of the spotlight. This programme reveals the hidden history of the SAS, from its formation in the North African Desert in World War II to its highly secret operations in the jungles of Malaya and Borneo. It reveals 'the hidden wars' fought by the SAS in Oman in the 1950s and 1970s, undercover operations in Northern Ireland and missions previously shrouded in secrecy in the Gambia, Sierra Leone, Bosnia and the Yemen.