Jersey

Jersey and the other Channel Islands represent the last remnants of the medieval Duchy of Normandy that held sway in both France and England. These islands were the only British soil occupied by German troops in World War II. The Bailiwick of Jersey is a British Crown dependency, which means that it is not part of the UK but is rather a self-governing possession of the British Crown. However, the UK Government is constitutionally responsible for its defense and international representation.
Source: World Factbook 2020