They split their force. Their plan was to pin down at Marathon the Athenian infantry with their more numerical infantry, while their cavalry was shipped around to capture Athens in the absence of its army. The Athenian army would then be trapped in the open between the captured city walls and the infantry at Marathon.
Their error was in imagining their infantry without its cavalry support could stand up to the Athenian infantry. The Athenian armoured infantry, when they realised their opportunity, rand down from the hills around Marathon and over-ran the weaker Persian infantry. The Persians aid the price for this mistake.
The Athenian infantry then realised that the Persian cavalry was being shipped down the coast to Athens, so they ran the 26 miles over the hills back to Athens and arrived just in time to turn back the Persian cavalry when it was being disembarked. The Persians gave up and went home.
Miltiades the Younger helped to defeat the Persians at the Battle of Marathon .
He lost the battle there
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Today's historians mostly agree on around 10,000 Greeks fighting some 25,000 Persians. Ancient Greek sources multiply the Persian forces by 10, which all through history always has been a favorite trick to make the victory of your own side seem more glorious. But even if we are to believe those much higher estimates, the site of the battle was so marshy that there was simply no room for more than around 15-20,000 Persians to fight the Greeks at the same time during the battle and the rest of the Persians (if there indeed was a rest) would have been forced to only watch from a distance.
General US Grant was taken by surprise at the Battle of Shiloh. Even with the surprise, the outcome of the battle was a Union victory.
The Saxons left their formation and charged at the Normans, which left them exposed to the enemy.
To fight desperately with its inferior infantry, as its cavalry had been embarked to make a raid on the city of Athens.
Make a mistake is correct.
I guess it can be error? An error is the mistake, to make a mistake is to err.
Roads.
the Persians were the main enemy during there rise to power , they fought in the great battle of salamis and the Greeks won the war starting with about 400 and beat the Persians who had over 1300 ships, they were forced to make a long retreat.
Meade was unable to pursue Lee on his retreat. Had he done so, he might have been able to crush him then and there.