To all of you saying Alexander is better because he faced the Persians with such superior numbers...
1. Hannibal was also outnumbered.
2. I can't help but notice almost every historical source regarding Greek vs. Persia, is by a GREEK historian of the time. "according to this Greek historian, according to that Greek historian" And no kidding! If you take everything from the GREEK perspective, the Persians will seem like the "bad guys". Well you know what? If you take everything from the Persian perspective, the Greeks will seem like the bad guys!
But oh wait, who am I kidding... This is the west, I should have known better. Greece is the symbol of the west and anyone that dosen't worship it like a mindless robot deserves to die...
All of you guys are talking about how horrible the Persian army was. Those "statistics" could have been made up as far as I"m conserned, but let me ask you this: If the Greek army was so great and the Persian army was a piece of crap, how come Rome easily invaded Greece, but never did so with Persia?
And sure Greece invaded Persia, but how long did they keep it? If by that definition Greece invaded Persia, England invaded America in the war of 1812.
In reality, Persia outlasted Greece. Greece "invaded" Persia for a short time, but in the end the two super powers were Rome and Persia. Rome never managed to invade Persia (or vice versa). Now I'm not saying Persia is better than Greece. I'm saying they're equal to Greece. In some ways Greece is better and in some ways Persia is better. Most westerners won't admit that though.
Persia is studied little in the west, and the few times it is, it is with a HUGE Greek/Roman biased.