The ancient battle considered a key moment in the Greco-Persian Wars is the Battle of Marathon, fought in 490 BC. This battle occurred during the first Persian invasion of Greece, where an outnumbered Athenian army, led by General Miltiades, faced the Persian forces. Despite the odds, the Athenians achieved a surprising victory that boosted Greek morale and demonstrated their military capabilities. The triumph at Marathon is celebrated in history and lore, exemplifying the struggle for Greek independence and freedom against a powerful empire, while influencing future Western military strategies.