Grades 3 - 7

For over 200 years, the United States Army has been one of the most powerful armies in the world. Responsible for all land-based operations, the Army uses a variety of vehicles and troops to… More →

The United States Navy patrols waters around the world to protect U.S. interests. With everything from nuclear-powered submarines and aircraft carriers to helicopters and jet fighters, the… More →

Named after General Creighton Abrams, the Abrams tank is the main battle tank of the United States Army. Its powerful main gun, composite armor, and large engine make it one of the most… More →

The Green Berets are a Special Forces unit of the United States Army. They carry out a variety of missions, including search-and-rescue, counterterrorism, and strategic assaults on enemy… More →

Dinosaurs, the world's most notorious reptiles, became extinct a long time ago. However, their cold-blooded, scaly reptile relatives still creep around today. While people no longer have to… More →

The United States Coast Guard’s motto is Semper Paratus, or “Always Ready.” Protecting the coasts of the United States, the branch uses several kinds of ships and aircraft to intercept enemy… More →

The main gun on an M109A6 Paladin can fire up to four rounds every minute. Each round can travel up to 15 miles (24 kilometers). The Paladin has been the backbone of United States Army… More →

The United States Marines Corps works closely with the United States Navy to carry out amphibious assaults. Marines fight on land or at sea, depending on their mission. Their intense training More →

United States Navy SEALs are trained to fight at sea, in the air, and on land. It takes years of training to become a SEAL, and most who try to become SEALs fall short. It is this rigorous… More →

The largest animal alive is a mammal. It's the 150-ton blue whale. This whale is not only large but also loud—louder than a jet engine! Turn the pages of this book to learn about the… More →

The United States Air Force uses fighter jets, cargo planes, reconnaissance aircraft, and bombers to perform a variety of missions. Skilled pilots, airmen and airwomen, and excellent teamwork More →

Delta Force is the most elite force in the United States Army. It specializes in covert operations, often undercover deep in enemy territory. Only the best in the Army can serve in Delta… More →