The famous battle fought in 1066 that changed the course of English history is the Battle of Hastings. This battle, fought on October 14, pitted the Norman forces led by Duke William of Normandy against the English army commanded by King Harold II. The victory of William, later known as William the Conqueror, led to the Norman conquest of England and resulted in significant cultural and political changes. The battle established Norman rule, influenced the English language, and integrated feudalism into England. The culmination of this conflict marked the beginning of a new era in English history, profoundly shaping its future.