Kenneth Estes studies the 100,000 West Europeans who fought against Russia as volunteers for the Wehrmacht and Waffen-SS. A retired Marine Corps lieutenant colonel, Estes shows tremendous knowledge of combat and writes gripping battlefield prose. Two-thirds of the West European volunteers came from Spain and the Netherlands, yet Estes demonstrates wide range and covers Flemish, Walloon, French, Danish, and Norwegian combat units. Avoiding over-generalization, the author distinguishes carefully among the Danes and Flemings who fought competently with the SS-Wiking Division and later with...