Paddy Mayne, the second CO of 1 SAS, taking over from David Stirling at the conclusion of the Northern Africa campaign. He was an enigma of a man.  On one hand he was a ruthless killer, an awful bully, and a hopeless alcoholic who was able to lead his men fearlessly into combat over and over again. 

On the other, he was a shy, awkward, depressed guy that loved James Joyce novels and tending his rose garden.