The Schlieffen Plan was created in World War 1. It was used by the Germans to in order to fight France and Russia in the war. Germany was one of the central powers and was therefore in the "middle" of France and Russia. Russia was allied with France, so once a country declared war on France, the Russian army had to pitch in and help them fight.
Furthermore, the Germans declared war on France and Russia was ready to mobilize.
While Russia was mobilizing, the Germans wanted to fight one front at once quickly, so they could then fight Russia. They had to march through neutral Belgium and encircle the French army.
If something happened in ancient Egypt it would’ve happened in around 3100 BC to around 332 BC.
The Louisiana Territory from Napoleon; half a billion, 3 cents an acre
Each enemy believed that willpower was weaker on one side rather than the other, resulting in them believing it would be easy and done with.