Abrocomes was a son of king Darius I of Persia and his wife Phratagune, who died with his full brother Hyperanthes in the battle of Thermopylae, while fighting over the body of Leonidas (Herodotus, 7.224). Seal of Darius I, showing the king hunting on his chariot, and the symbol of Ahuramazda Darius the Great (Pers. ... For other uses of this term see: Persia (disambiguation) The Persian Empire is the name used to refer to a number of historic dynasties that have ruled the country of Persia (Iran). ... Combatants Greek-city states Persia Commanders Leonidas I of Sparta â Xerxes I of Persia Strength 300 Spartans, 4900 other Greek soldiers 200,000-1,700,0001 Casualties 300 Spartans 20,000 - 80,000 (no more than 10%) 1Herodotus claims that the Persian strength was 5,283,220 men (Herodotus VII... Leonidas can refer to: Leonidas I, king of Sparta, ruled c. ... Bust of Herodotus Herodotus of Halicarnassus (Greek: , Herodotos Halikarnasseus) was a Dorian Greek historian who lived in the 5th century BC (484 BC - ca. ...