Famous Battle of WW1 By itsxnelly Aug 26, 1914 Battle of Tannenberg begins. Between Russia's Second Army and Germany's Eight Army. Aug 26, 1914 Russian First Army led by Rennenkampf is directed to Königsberg. Aug 27, 1914 Germans start attack on Russia's Second Army led by Samsonov. Aug 29, 1914 Russian Second Army is surrounded. Aug 30, 1914 Battle of Tannenberg ends with German victory. 1916 Attack on Fort Douaumont. Feb 21, 1916 Battle of Verdun. Jun 1, 1916 Fort Vaux. Was attacked Jun 7, 1916 The Fall of Fort Vaux. Dec 18, 1916 End of Battle of Verdun.