Trench Warfare in WW1

World War 1 is perhaps best known for being a war fought in trenches, ditches dug out of the ground to give troops protection from enemy artillery and machine-gun fire.
The trenches spread from the East to the West. By the end of 1914, trenches stretched all along the 475 miles front between the Swiss border and the Channel coast. In some places, enemy trenches were less than thirty yards apart.
Although trenches spread for many miles, their appearance varied. Upon looking more closely, one could see that each army's trench line was actually a series of three trenches. These three lines…