One day in Marathon, the Greeks and Persians were ready to fight and declare war on each other. The Persians astoundingly outnumbered the Greeks, but the Greeks were smart. Easily, they could beat them with their strategy. The Greeks had an expert formation that would crush the Persians, even if they did have more men.
What the heck?
The Greeks had their front line run to the Persians. The Persians were shocked and were caught off guard. The Greeks managed to kill a few of the Persians, then ran back into formation.
The Persians followed the Greeks back into their formation which was just what the Greeks wanted. The Persians had simply fallen into their trap. They took the bate.
The Greeks enclosed the Persians and attacked them from three sides. This was a much better battle plan, because much more of the Persians were killed, even though the Greeks were outnumbered.
According to some legends, an Athenian man was sent to run as fast as he could 26 miles to Athens to declare the victory of the Greeks. This is why a 26 mile marathon is called a marathon today!
He nearly made it to Athens, so tired he was about to die. But, before his final breath, the man yelled that the Greeks were victorious! They won the battle of Marathon!