World War, 1939-1945--Underground movements
Here are entered works on enemy occupied territories discussed collectively. Works on the occupation of an individual country are entered under the name of the country with appropriate period subdivision, e.g. [Belgium--History--German occupation, 1940-1945; Norway--History--German occupation, 1940-1945.]
World War, 1939-1945--Occupied territories
World War, 1939-1945--Collaborationists
World War, 1939-1945--Territorial questions