MightGem's post on Gen. Shirreff's book put me in mid of 'Shan' Hackett's World War Three book's, however my recommendation is his "I was a Stranger" the account of how he evaded and escaped after Arnhem, being sheltered while recovering from severe wounds by extremely brave Dutch civilians.
Next to it on my bookshelves are Noreen Riols's "The Secret Ministry of Ag. & Fish: My Life In Churchill's School for Spies" an account of her SOE service and Ewen Southby-Tailyour's "Reasons in Writing: a Commando's View of the Falklands War" both of which I found good reads. On the subject of the last I recently read Chis Parry's "Down South: A Falklands War Diary" and had difficulty putting my Kindle down (might be biased though - him being a looker and all
) .