What was founded in 1941 as a regiment, and later reconstituted as a corps in 1950, that fought along side a Greek special forces unit formed in 1942 in the Middle East in the Western Desert and the Aegean?
Sacred Band (World War II):  It fought alongside the SAS in the Western Desert and the Aegean, as well as with General Leclerc's "Free French Forces" in Tunisia. Special Air Service: The Special Air Service (SAS) is a special forces unit of the British Army.
i don't know