Persia and the Empire of the Persians

The Persians ruled over like 80 different people, and herodotus runs down more than forty of them. They had all these provinces stretching from modern day pakastan to modern day libya,. And they could levy troops for the entire thing. Historians are unsure how much those troops played a role in a typical set pieace battle. But it's just going to shows the width and breadth of the persian king of kings ability to call on troops e as needed.