the chief feature of the war on the western front was
Western Front (World War I) The Western Front was the main theatre of war during the First World War. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The tide of the advance was dramatically turned with the Battle of the Marne. Following the Race to the Sea, both sides dug in along a meandering line of fortified trenches, stretching from the North Sea to the Swiss frontier with France, which changed little except during early 1917 and in 1918.
Two-front war The most famous example of a two-front war was the European theatre during World War II, when Hitler's Nazi Germany had to confront the Western Allies on the west and the Soviet Union to the east. The Germans were unable to repel either of the advances on the two fronts and eventually lost the war. While there were other contributing factors, such as the insufficiency of the Wehrmacht for a long war and the abandonment of blitzkrieg tactics because of fuel shortages and a rising need to defend territory, the two-front war was an important factor in deciding when the German military would be forced to surrender.