In warfare, the battles grab most of the attention. But there is also a secret history to every war. In this series we look at this hidden world of spies, double agents, assassins, and saboteurs and learn how their actions affected the course of the world's most devastating conflicts.
Number of Titles: 3
Interest Level: Grades 6-9
Reading Level: Grade 7
ISBN: 9781615356157 (E-book)
Copyright: ©2012