Rapidly advancing military technology played a decisive role in the outcome of World War II. Readers will explore some of the war's most important weaponry developments, from the creation of new bomber and fighter planes to the use of powerful new tanks, anti-aircraft guns, and bazookas. They will also find out how these weapons turned the tides in some of the war's biggest battles. The complex text in this title allows readers to determine main ideas and explain how they are supported by key details. The grade-appropriate context helps readers determine the meaning of domain-specific words and phrases as well.