Western Front

"The German Army opened the Western Front by invading Luxembourg and Belgium...in August 1914."

"The German advance was halted with the Battle of the Marne."

"Both sides dug in along a meandering line of fortified trenches."

"Among the most costly of these offensives were the Battle of Verdun, in 1916, with a combined 700,000 casualties, the Battle of the Somme, also in 1916, with more than a million casualties, and the Battle of Passchendaele, in 1917, with 487,000 casualties."

"To break the deadlock of the trench warfare on the Western Front, both sides tried new military technology, including poison gas, aircraft, and tanks."

"The German spring offensive of 1918 was made possible by the Treaty of Brest-Litovsk that ended the war of the Central Powers against Russia and Romania on the Eastern Front."

"The German armies moved nearly 100 kilometres (60 miles) to the west, the deepest advance by either side since 1914."

"The unstoppable advance of the Allied armies during the Hundred Days Offensive of 1918 caused a sudden collapse of the German armies."

"The German government surrendered in the Armistice of 11 November 1918."

"The terms of peace were settled by the Treaty of Versailles in 1919."

"The German Army... gaining military control of important industrial regions in France."

"The attacks employed massive artillery bombardments and massed infantry advances."

"Both sides tried new military technology, including poison gas, aircraft, and tanks."

"Using short, intense 'hurricane' bombardments and infiltration tactics."

"The result was indecisive."

"The Treaty of Brest-Litovsk that ended the war of the Central Powers against Russia and Romania on the Eastern Front."

"The Battle of the Marne...halted the German advance."

"The advance...persuaded the German commanders that defeat was inevitable."

"The Battle of Verdun...with a combined 700,000 casualties."

"The terms of peace were settled by the Treaty of Versailles in 1919."