James George Frazer,
The Golden Bough: A Study in Magic and Religion…
“ Moreover, games were celebrated every fourth year in honour of these heroic dead, the principal prizes being offered for a race in armour.294 At Athens funeral games were held in the Academy to commemorate the men slain in war who were buried in the neighbouring Ceramicus, and sacrifices were offered to them at a pit: the games were superintended and the sacrifices offered by the Polemarch or minister of war.295 Funeral games have been celebrated in honour of the dead by other peoples both in ancient and modern times. ”
