Background:
The island of Guernsey and the other Channel Islands[?] represent the last remnants of the medieval Dukedom of Normandy, which held sway in both France and England. The islands were the only British soil occupied by German troops in World War II.
... by the narrow and shallow Strait of Tartary or Mamiya Strait, which often freezes in winter in its narrower part, and from Yezo (Japan) by the Strait of La Pérouse. Sakhalin ...