Areas announced for annexation to Nazi Germany Date of announcement of annexation Area planned to be annexed Planned succession 1944-12-15 Brussels, Kingdom of Belgium District of Brussels Flanders, Kingdom of Belgium Reichsgau Flanders Comines-Warneton, Wallonia, Kingdom of Belgium Nord, Provisional Government of the French Republic Reichsgau Wallonia Pas-de-Calais, Provisional Government of the French Republic Voeren, Flanders, Kingdom of Belgium Wallonia, Kingdom of Belgium