who defeated king darius at the battle of marathon
Battle of Marathon The Athenians and their allies chose a location for the battle, with marshes and mountainous terrain, that prevented the Persian cavalry from joining the Persian infantry. Miltiades, the Athenian general, ordered a general attack against the Persian forces, composed primarily of missile troops. He reinforced his flanks, luring the Persians' best fighters into his center. The inward wheeling flanks enveloped the Persians, routing them. The Persian army broke in panic towards their ships, and large numbers were slaughtered. The defeat at Marathon marked the end of the first Persian invasion of Greece, and the Persian force retreated to Asia. Darius then began raising a huge new army with which he meant to completely subjugate Greece; however, in 486 BC, his Egyptian subjects revolted, indefinitely postponing any Greek expedition. After Darius died, his son Xerxes I restarted the preparations for a second invasion of Greece, which finally began in 480 BC.
Battle of the Hydaspes The Battle of the Hydaspes was fought in 326 BC between Alexander the Great and King Porus of the Paurava kingdom on the banks of the river Jhelum (known to the Greeks as Hydaspes) in the Punjab region of the Indian subcontinent (modern-day Punjab, Pakistan). The battle resulted in a complete Greek victory[a] and the annexation of Punjab, which lay beyond the far easternmost confines of the already absorbed Persian Empire, into the Macedonian Empire.