France during World War II
France was one of the largest military powers to come under occupation as part of the Western Front in World War II. The Western Front was a military theatre of World War II encompassing Denmark, Norway, Luxembourg, Belgium, the Netherlands, the United Kingdom, France, Italy, and Germany. The Western Front was marked by two phases of large-scale combat operations.
Source: Wikipedia — France during World War II (CC BY-SA 4.0)