The Unknown War: The Eastern Front

''The Unknown War: The Eastern Front'' (1931) by Winston S. Churchill, entering the public domain in the US and Canada, is a historical account focusing on the massive, often-overlooked battles between Russia, Germany, and Austria-Hungary during World War I, largely from 1914 to 1917. It covers the dynamic, expansive fighting that led to the Russian Revolution and the collapse of the Eastern Front.

Unlike the static trench warfare of the West, Churchill highlights the massive troop movements, rapid victories, and crushing defeats in the East. The narrative covers the Russian invasion of East Prussia, the Battle of Tannenberg, the campaigns in the Balkans, and the Russian Revolution.

Churchill felt the war was misunderstood by Westerners, who often forgot the immense losses and crucial role of the Eastern Front in the overall conflict and its large, decisive contribution to the Allied victory in the West.