Cracker!: The Best Dog in Vietnam by Cynthia Kadohata

Cracker is one of the United States Army's most valuable weapons: a German shepherd trained to sniff out bombs, traps, and the enemy. The fate of entire platoons rests on her keen sense of smell. Told in part through the uncanny point of view of a German shepherd, Cracker! is an action-packed glimpse into the Vietnam War as seen through the eyes of a dog and her handler. It's an utterly unique powerhouse of a book by the Newbery Medal-winning author of Kira-Kira.