[Neel Here]

well, tbh temujin aka chingiz WAS a great general and leader of men.

the thread title needs editing IMHO. warrior is one who fights, whether these people were the best fighters even in their own armies would be extremely questionable.

if it's military leaders we are discussing then my choices would be (not necessarily in that order)

hannibal barca (almost destroyed the roman empire with little more than a bunch of mercenaries, a good supply of money and his own superb generalship. he also crossed the alps from west with his army AND his war elephants)
samudragupta (united much of the Indian sub-continent in a blitzkrieg campaign lasting 3 years, all 2000 km span of it. he started off as a prince of a small kingdom and 3 years later was the samrat. his novel military organisation closely echoes modern european ones introduced by napoleon more than a 1000 years later)
chingiz khan (uniter of the mongol people and creator of a military machine that few had an answer to. even the great civilizations crumbled before his and his progeny's hordes -- china, central europe, russia, iran, iraq etc)

on alexander of macedon, I think his father philip deserves a lot of the credit he gets. for thinking up an army and training it to create a competent force. he was a true visionary.