World War I altered the landscape of the modern world in every conceivable arena. Millions died; empires collapsed; new ideologies and political movements arose; poison gas, warplanes, tanks, submarines, and other technologies appeared. "Total war" emerged as a grim, mature reality.

In The Great War, Peter Hart provides a masterful combat history of this global conflict. Focusing on the decisive engagements, Hart explores the immense challenges faced by the...