Germany attacked Poland on 1 September 1939 and Britain and France declared war on Germany two days later. The German invasion of Belgium, the Netherlans, Luxembourg and France started on 10 May 1940.
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.
Britain, France and Belgium invaded
belgium belgium
Through Belgium
After the Polish campaign of 1939, the Germans attacked France, Netherlands and Belgium.
They invaded at the beginning of the war through Belgium
Belgium. Neutral Belgium was attacked by the Germans on there way to France
Russia jumped in on Serbia's side, dragging in her ally, France, in the process. This triggered the German attack on France, which the Germans made by way of Belgium. Going through Belgium brought Great Britain in. So Russia, France, Belgium and Great Britain (and all her Commonwealth states and colonies).
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.
river that runs through France and belgium
In violating the Belgian neutrality, the Germans marched through Belgium to attack France. This action greatly influenced England's entrance into the war.
They Invaded Belgium on their way to France
Britain, France and Belgium invaded
Belgium. And Netherlands & Luxemburg
The Germans simply out-flanked the Maginot Line by invading France through Belgium.
France
Germany invaded Belgium in the later 1914 to early 1915