When there was a battle to be fought, these warriors were there: gladiators, conquistadors, ninjas, Vikings . From Roman arenas to the lawless high seas, this series for readers age 12 and up spotlights the world's most fearsome combatants. Each title surveys the history of a fighting group, examining key leaders, weapons, skills, rules of warfare, and reasons for existing. In the early 1500s, driven by greed, glory, and God, the group of Spanish fighters called conquistadors struck fear in indigenous people throughout the Americas and earned praise for their deeds from Europeans. Armed with violence and aggressive confidence, they fought to conquer, to colonize land in the New World, and to fill their chests with gold. This title for readers age 12 and up surveys the history of the invading warriors. It covers key leaders, weapons, combat skills, and rules of warfare. Includes a glossary, sidebars, index, and further resources.