Richter, Klaus: Warfare 1914–1918 (East Central Europe), in: 1914-1918-online. International Encyclopedia of the First World War. Zhvanko, Liubov: Ukraine, in: 1914-1918-online. International Encyclopedia of the First World War. Sergeev, Evgenii Iur'evich: Pre-war Military Planning (Russian Empire), in: 1914-1918-online. International Encyclopedia of the First World War. Nachtigal, Reinhard, Radauer, Lena: Prisoners of War (Russian Empire), in: 1914-1918-online. International Encyclopedia of the First World War. Szlanta, Piotr, Richter, Klaus: Prisoners of War (East Central Europe), in: 1914-1918-online. International Encyclopedia of the First World War. Shcherbinin, Pavel Petrovich: Women's Mobilization for War (Russian Empire), in: 1914-1918-online. International Encyclopedia of the First World War. With the Russian army, 1914–1917 by Alfred Knox War And Revolution In Russia 1914–1917 by General Basil Gourko. WWI German Military Cemeteries in Belarus modern photos by Andrey Dybowski (rus). Der Vormarsch der Flieger Abteilung 27 in der Ukraine (The advance of Flight Squadron 27 in the Ukraine). This portfolio, comprising 263 photographs mounted on 48 pages, is a photo-documentary of the German occupation and military advances through the southern Ukraine in the spring and summer of 1918. Campaigns and theatres of World War I Eastern Front Austria-Hungary in World War I Bulgaria in World War I German Empire in World War I Ottoman Empire in World War I Romania in World War I Russian Empire in World War I Ukraine in World War I Invasions of Russia