The Clan is split into two types of warriors, Moonlight and Sunlight. During the day, Moonlight Warriors both sleep and build dens, while Sunlight Warriors gather den materials and patrol borders. At night, Moonlight Warriors gather water and hunt while Sunlight sleep and keep watch. The Clan has two Deputies, Sunlight and Moonlight. They are in charge of their corresponding warriors, and during a large-scale battle will be leading each charge. When one dies or retires, the leader chooses a new one. When the leader dies, the Sunlight and Moonlight Deputies participate in two duels. One at Sunhigh, one at Moonhigh, they last until a surrender. If the score of wins is 1-1, then the pair are both exiled, and the first one to return with proof of the other's death is made leader. During this time, the Medicine Cat will be in charge at gatherings and clan meetings, and the Clan will avoid battle as much as possible. Yeah, they appear friendly enough to the other clans, but just like the desert, they have a dark side. (Definitely not foreshadowing)
OG ref by @Rainwingwolf DuneClan and SandStar belong to me, @Darkhope377