The order is given to attack the Scythian army. Act II, Scene iii Cosroe wants to know what Tamburlaine thinks of their chances. His response is confident. Techelles and Usumcasane offer their services to Cosroe who promises them rich rewards when he is emperor of Asia. Word comes that the Persian army is nearby.
Battle is about to commence.
The battle has gone badly for Mycetes who hides his crown. Tamburlaine finds him and takes the crown away from him. He gives it back with the intention that he'll remove it from Mycetes' head later. Act II, Scene v The Scythians have won the battle. Cosroe makes Tamburlaine regent of Persia and reinstates Meander who was Mycetes' chief counsellor.