Military in Persia

Herodotus the historian records that the provinces and cities ofthe Empire were each responsible to raise their quota of forces. Hegives a combined total of over two million, though the quality ofthe contingents and their effectiveness varied greatly.None o them had metal armour, and so found it difficult to standup to Greek armoured warriors. Their main strength was in theircavalry. When Alexander the Great invaded PERSIA, he raised a largeforce of mercenary cavalry, which helped tip the balance againstthe Persians, whose attempts to establish and armoured infantry oftheir own failed. .