Osprey's study of the Battle of the Marne, which was one of the decisive encounters of World War I (1914-1918), saving France from a catastrophic defeat that would almost certainly have knocked her out of the war. Germany's failure to defeat the French committed her to a war on two fronts, which would lead to trench warfare and the war of attrition that the General Staff had hoped to avoid. The conduct of the battle served to make and break the reputation...