Send in the furry, feathered, or flippered troops! For centuries, animals have held important positions in militaries across the globe. Some particularly frisky felines have been trained as spies. Pigeons deliver top-secret messages between troops during wartime. Dogs, rats, bumblebees, and dolphins are deployed to sniff out explosives. Without the help of these courageous critters, many a battle would have been lost. Through accessible text and action-packed photographs, readers will get an eagle-eyed view of how these animals have helped protect cities and countries worldwide.