Faliase is where William the Conqueror was born. William became Duke of Normandy when he was just a boy. He went on to become the first Norman king of England in 1066. Falaise was where many of the dukes of Normandy resided before William. It is where the Treaty of Falaise was signed in December 1174. It was a treaty between William I of Scotland, King of Scots, and the King of England Henry II Plantagenet.
The town is also the place where Rabbi Yom Tov of Falaise, grandchild of Rashi held his court.
In World War II
In modern times it is known for the battle of the "Falaise Pocket" during Operation Overlord) in August 1944. Two German armies were surrounded by the Allied armies. About 10,000 German soldiers were killed. Over 50,000 were taken prisoner.
Falaise Facts for Kids. Kiddle Encyclopedia.