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 eight 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 scene of the the struggle between a bull and a lion reliefs. This is a very ancient Iranian motif, known from the fourth millennium BC.
Above the soldiers there is a traditional representation of a winged sun, flanked by two sphinxes.
The sphinxes have the wings of an eagle, the body of a lion, the ears and tail of a bull, and the head of a man.
A possible interpretation of this symbol is that it represents freedom (the eagle's wings), power (the lion's body), strength (the bull), and intelligence (the human head).