On May 5, 1980, the world watched as the SAS performed a daring raid on the Iranian Embassy in London. Hailed by Margaret Thatcher as "a brilliant operation," the raid was a huge success for the SAS, rescuing nineteen hostages with near-perfect military execution, although two were killed by the terrorists. Despite the media attention, details of the siege are still largely unknown and the identities of the SAS troopers remain a guarded secret. This...