"Imagine strapping on a highly flammable 70-pound pack and entering combat as a surefire walking target— and you'd only begin to understand the job, and the horror, of [a] Marine Corps flamethrower man. That's precisely what Hershel 'Woody' Williams did in World War II, most importantly in February 1945 on Iwo Jima, one of the Pacific War's toughest battles. A few days into the battle, Marines were fighting hard for an airfield, and his captain...