Who are the brave warriors of history and of today? This title discusses the origin of ninjas, their historical development, famous examples, key skills, and traits, along with details about weapons, training, and missions. These covert Japanese warriors are best known for their unorthodox warfare, and their high regard for honor and combat. Special features include sidebars, infographics, on-page definitions, online search sidebar, further evidence sidebar and primary sources. This title also includes a timeline, glossary, Web links, index, and common core activities. Aligned to Common Core Standards and correlated to state standards. Core Library is an imprint of Abdo Publishing, a division of ABDO.