The horse was of consequence in wartime, transportation, and inspiration. The horse was an essential component of Celtic battle strategy. In fact, the Celts creative use of horses/chariots in battle was admired by many enemies like the Romans who adopted the Celts’ strategies. The Romans even employed Celtic mercenaries to take advantage of their courage and ability to employ the horse in strategic ways.
Epona, the earth goddess, often was depicted riding a horse. Thus the horse came to be associated with her and her powers.
Horses also figured prominently in Celtic art. In the graphic below, the three horses most likely represent the eternal cycle.