The Green Berets. The Navy SEALs. The secret Delta Force. The British SAS. The Israeli Mossad. Almost every country has a special force unit in their military. But what do they do, whom do they recruit, and how do they train? Robin Neillands, renowned military historian and himself a former Royal Marine Commando, tells the story of special forces since the end of the World War II, where possible in the words of the soldiers themselves. He describes...