Chickenhawk from Robert Mason, a Vietnam war veteran who flew "Slicks" (Hueys in transport roles).

already bought the book but still have to read: "With The Old Breed" from E. B. Sledge who was part of the 1st Marine Division in the Pacific theater during WWII. The miniseries "The Pacific" is based primarily on these memoirs by Eugene Sledge and "Helmet for My Pillow" by Robert Leckie.