The Battle of Tinchebray took place on September 28, 1106, in Normandy, France. It was a significant conflict between the forces of King Henry I of England and Robert Curthose, the Duke of Normandy. The battle was part of a power struggle for control over Normandy and England, following the Norman Conquest. King Henry's forces achieved a decisive victory, leading to the capture of Robert. This battle solidified Henry's control over Normandy and marked a turning point in the history of the region, reinforcing the connection between England and Normandy under a single ruler.