Early in his career, Adolf Hitler took inspiration from Benito Mussolini, his senior colleague in fascism—this fact is widely known. But an equally important role model for Hitler and the Nazis has been almost entirely neglected: Mustafa Kemal Atatürk, the founder of modern Turkey. Stefan Ihrig’s compelling presentation of this untold story promises to rewrite our understanding of the roots of Nazi ideology and strategy.

Hitler was deeply interested in Turkish affairs after 1919. He not only admired but also sought to imitate Atatürk’s radical construction of a new nation from the ashes of defeat in World War I. Hitler and the Nazis watched closely as Atatürk defied the Western powers to seize government, and they modeled the Munich Putsch to a large degree on Atatürk’s rebellion in Ankara. Hitler later remarked that in the political aftermath of the Great War, Atatürk was his master, he and Mussolini his students.

This was no fading fascination. As the Nazis struggled through the 1920s, Atatürk remained Hitler’s “star in the darkness,” his inspiration for remaking Germany along nationalist, secular, totalitarian, and ethnically exclusive lines. Nor did it escape Hitler’s notice how ruthlessly Turkish governments had dealt with Armenian and Greek minorities, whom influential Nazis directly compared with German Jews. The New Turkey, or at least those aspects of it that the Nazis chose to see, became a model for Hitler’s plans and dreams in the years leading up to the invasion of Poland.

The Armenian Genocide and the Nazi Holocaust are often thought to be separated by a large distance in time and space. But Stefan Ihrig shows that they were much more connected than previously thought. Bismarck and then Wilhelm II staked their foreign policy on close relations with a stable Ottoman Empire. To the extent that the Armenians were restless under Ottoman rule, they were a problem for Germany too. From the 1890s onward Germany became accustomed to excusing violence against Armenians, even accepting it as a foreign policy necessity. For many Germans, the Armenians represented an explicitly racial problem and despite the Armenians’ Christianity, Germans portrayed them as the “Jews of the Orient.”

As Stefan Ihrig reveals in this first comprehensive study of the subject, many Germans before World War I sympathized with the Ottomans’ longstanding repression of the Armenians and would go on to defend vigorously the Turks’ wartime program of extermination. After the war, in what Ihrig terms the “great genocide debate,” German nationalists first denied and then justified genocide in sweeping terms. The Nazis too came to see genocide as justifiable: in their version of history, the Armenian Genocide had made possible the astonishing rise of the New Turkey.

Ihrig is careful to note that this connection does not imply the Armenian Genocide somehow caused the Holocaust, nor does it make Germans any less culpable. But no history of the twentieth century should ignore the deep, direct, and disturbing connections between these two crimes.