Achilles and Patroclus grew up together and had become close comrades in the fight against the Trojans. Achilles is the most dominant, and among the warriors in the Trojan War he has the most fame. Patroclus performs duties such as cooking, feeding and grooming the horses, yet is older than Achilles and wise regarding counsel.
Source: http://www.patrokles.com/brand-story/
