Early in the war, hitler overran the netherlands, and belgium.

Adolf Hitler overran the following countries: Norway, Denmark, Netherlands, and Belgium. Norway and Denmark should fill in your two blanks. This war was known as the Second World War which lasted from Sep 1, 1939 to Sep 2, 1945 between the Axis and the Allies of the war. 

Let me know if you need further info. :)

                - Dotz

To clear or to keep awake