The history of the First World War is infinitely complex and confusing, so many of its facts and circumstances are still unknown even to leading experts. The memoirs of the officer of the German General Staff Ernst Paraquin (Parakin), previously not published either in the original or in translation, are valuable evidence of the events in the Middle East and Transcaucasia, as well as the last months of the existence of the Ottoman Empire and the tragic pages of the national-state demarcation after collapse of the Romanov Empire. The memoirs cover the years 1917–1918, the time of Paraquin’s participation in military campaigns in Mesopotamia and the Caucasus. The author of the memoir, who paid with his promising career for condemning the killing of Armenians in Baku in September 1918, reflects on the dramatic political processes that unfolded on the peripheral stages of the theater of the First World War.