History of Europe
Stone's book of greatest note is "The Eastern Front 1914-1917" (1975) which won the Wolfson History Prize. He also wrote "Hitler" (1980), "Europe Transformed" 1878-1919 (1983), which won the Fontana History of Europe Prize, and "World War I: A Short History" (2007). He mostly wrote about historical events in the past century and specifically was an expert on both World Wars.