Secret History of World War II, TheBy: Neil Kagan From top secret spy missions to recently declassified WWII documents, this richly illustrated account of the covert espionage operations of World War II takes readers behind the battle lines and into the undercover war effort. National Geographics landmark book includes recently released never before seen photographs, coded messages, classified maps, and more than 700 rare artifacts that shed light on the war's darkest secrets. This is