Greeks Army

Ancient Greece, did you know that a small group of Greek warriors defeated about 1000 Persian warriors ,and that they only lost 192 people and that tell’s that the Greek army of very powerful. Let’s think about, once they defeated the Persians, and conquered them, they went to conquer Egypt and lands beyond the Indus river. That is what  I think is interesting about the Greeks, that their army was strong and powerful and that is why Greeks and such influence on later civilization like the U.S.A. Do you know who has a more stronger army then Greece(it has to be in the Greeks time)?