Tracked vehicles are important to militaries around the world, since they're usually supporting and carrying ground troops. Readers will learn what tracks are and why they're necessary for large, frontline battle tanks like the Bradley M2 Abrams. Big full-bleed photographs, new glossary terms, and a close up look at a vehicle will keep readers wanting more! Aligned to Common Core Standards and correlated to state standards. Abdo Kids Jumbo is an imprint of Abdo Kids, a division of ABDO.