The Battle of Marathon occurred in 490 BCE between the Persians and the Athenians. It was a decisive blow against Persia during the first Greco-Persian War. After the battle, the spoils of war were used to either create or upgrade the treasury and store many of the other spoils as gifts to the gods. The metope of Theseus and the Bull of Marathon shows how the Athenians tried to tie the win to their divine right to be the head polis and rule over the others. This also tied their mythology more closely to their reality.