- from World War I
Germany wanted to take over France quickly, then attack Russia.
But France put up a strong fight. New weapons, such as machine guns, forced both sides to stay put. Both armies built trenches (deep narrow lines of defense dug into the earth). These trenches were about 400 miles long. They ran from the French-Swiss border to northern France. The armies attacked each other from these trenches, but neither side could win a clear-cut victory.