Each branch of the US armed forces has a unique job to do and important contributions to make. This title highlights the history and achievements of the US Army. Easy-to-read, engaging text explores the military branch's key missions and important roles in protecting the United States. Learn about cutting-edge technology and weapons, and discover what it is like to join the US Army and have a career as a soldier. Well-placed sidebars, vivid photos, helpful maps, abundant charts, and a glossary enhance readers' understanding of the topic. Additional features include a table of contents, a selected bibliography, source notes, and an index, plus a timeline and essential facts. Aligned to Common Core standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.