yes
May 1940.
Holland Belgium
DenmarkNorwayThe NetherlandsBelgiumLuxembourgFrance
Belgium
Yes, in both World Wars.
Luxembourgand Belgium
Belgium
Belgium: 18 Netherlands: 4
Belgium was over-run by the Germans in their initial attack to bypass the Maginot Line defenses of France. They were occupied for most of the war, so they were really not able to provide troops.
Not getting annihilated or otherwise taken over by the Germans.
The French were focused on the French-German border, meanwhile, the Germans entered France through Belgium. The Germans were able to quickly flank the French forces, and kept the French pinned until they retreated to England.
Poland, belgium, Iran, Iraq