Remembering Trench Warfare in World War I

Exactly 100 years ago, on Dec. 20, 1914, tens of thousands of French troops fixed bayonets and advanced on German lines amid the sound of heavy artillery and the rattle of machine guns, signaling the beginning of the First Battle of Champagne. Three months of vicious and grueling fighting would follow, marking the first campaign in a long series of trench warfare offensives and counteroffensives that would shape the Western Front of World War I.