The Size of the Army of Xerxes
In Warfare in the Classical World, p.28, John Warry credits the Persians with 130,000 foot and 20,000 horse supported by 1,200 triremes at Thermopylae and Artemisium. The Greeks have 7,000 infantry and 271 triremes.
In The Spartans by Paul Cartledge, p...