Allied Victory; Collapse of the Austro-Hungarian Empire; Beginning of the Russian Civil War
Russian Empire Romania (1916-1917) Bulgaria (1916-1917) Supported by United Kingdom France
German Empire Austria-Hungary
Tsar Nicholas II Grand Duke Nicholad Aleksei Brusilov Lavr Kornilov Constantin Prezan Nikola Zhekov
Paul von Hindenburg Erich Ludendorff Max Hoffman Conrad von Hötzendorf
12,000,000 1,100,000 720,000
Casualties and Losses
1,800,000 81,000 37,000
During the World War, the Eastern Front was a military theatre of operation that encompassed the frontier between the Russian Empire and Romania on one side, and the German empire and Austria-Hungary on the other. It stretched from the Baltic Sea in the north to the Black Sea in the south, included most of Eastern Europe and stretched deep into Central Europe as well.
Beginning on August 14, 1914 and ending with the armistice of December 6, 1917 that effectively ended World War 1, it was a far more fluid and mobile, unlike that of the trenches of the western front. This allowed great gains by Germany during the first years of the war, before the Constantinople Campaign reopened supply lines from the western allies to Russia, as well as the entrance of both Romania and Bulgaria (and to an extent Greece), allowed the entente to return to the offensive with massive breakthroughs against Austria-Hungary (as well as small breakthroughs in the German lines) in 1916 and 1917.