The relief on eastern stairs of the Apadana at Persepolis consists of three parts: the northern wall, the center and the southern wall.

This picture shows the central scene of the relief with four soldiers dressed like Medes and Persians.
Those with the round caps are usually identified as Medes, those with the straight caps as Persians.
Behind them is one of the the struggle between a bull and a lion reliefs. This is a very ancient Iranian motif, known from the fourth millennium BC.