Important Battles of World War One By Gargi Aug 12, 1914 Serbian Campaign Aug 26, 1914 Battle of Tannenberg Sep 9, 1914 First Battle of the Marnes Apr 25, 1915 Battle of Gallipoli Feb 21, 1916 Battle of Verdun Nov 13, 1916 Battle of the Somme Jun 14, 1917 Battle of Arras Jul 13, 1917 Battle of Passchendaele May 21, 1918 Spring Offensive Jul 18, 1918 Hundred Days Offensive 1,855,369 total casualties
