This book introduces readers to military animal messengers, from carrier pigeons to dogs that run across battlefields. 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.