This book introduces readers to the elephants, camels, mules, and other animals that have helped militaries carry essential supplies such as weapons, food, and first aid kits. Features include a table of contents, fun facts, infographics, Making Connections questions, a glossary, and an index. QR Codes in the book give readers access to book-specific resources to further their learning. Aligned to Common Core standards & correlated to state standards. DiscoverRoo is an imprint of Pop!, a division of ABDO.