In the US Military Encyclopedias series, readers will learn about the six US military branches, their jobs, and their special operations forces. Readers will dive into history and discover what major wars the United States has taken part in, and they will learn about the latest weapons and vehicles that the US military uses to defend the country. Aligned to Common Core Standards and correlated to state standards. Encyclopedias is an imprint of Abdo Reference, a division of ABDO.