Many Europeans saw Napoleon and his armies as foreign oppressors and fought back to save their countries.
Nationalism was important to Napoleon. He needed to keep his citizens loyal to France so that he could stay in power and spread his country's influence throughout Europe. Napoleon's aggression, however, increased the nationalistic impulses in his enemies and those he conquered.
The Nazi loss in the Battle of the Bulge sealed the Third Reich's fate-- the Allies were free to invade Germany, causing its downfall.
