Together, the branches of the US military defend the nation at sea, in the air, and on land. This title explores the history of each military branch, how it has evolved over time, and what its role is today. Features include a glossary, additional resources, and an index. Aligned to Common Core Standards and correlated to state standards. Encyclopedias is an imprint of Abdo Reference, a division of ABDO. Read more ISBN10 1098293037 ISBN13 978-1098293031 Language English Publisher Abdo Reference Dimensions 7 x 0.75 x 9 inches Grade level Preschool - 4 Item Weight 1.4 pounds Reading age 8 - 14 years Print length 192 pages Publication date December 15, 2023