Elder - is a Werewolf with great experience and knowledge of Werewolf packs. In the past they may have held such high ranks as Alpha or Beta. They are sometimes older members who have decided to make the pack their final resting place. An Elder's opinion is greatly respected throughout the pack, being advisor to both Alphas and Betas. They are asked to be role models to the pack, adults and young Werewolves included, and also to visitors, showing them the way of the pack.
Delta - is training to be a beta or possibly alpha, it ranks with the gamma wolf, the difference is; the gamma wolf is an advisor, the delta wolf is a fighter. Mental vs muscles. If an alpha wolf is killed or retires, automatically a beta wolf takes their place, this means the delta wolf also moves up to beta's rank. If there are more than 1 delta wolf in the pack, the two settle it through a duel until one surrenders - no killing the other wolf though.
Gamma - this wolf acts as an advisor for the Alphas and Betas, and usually hold a respected title over the rest of the pack. They may have done something very honorable to make the Alphas make you their most trusted friend. The Gamma wolves are just as important, you always must respect them. The Gamma wolf isn't as powerful as the Alpha or Beta, however, but are more powerful than the deltas, subordinates and sentinels.
Sentinel(s) - are to ensure that the pack is safe by patrolling the territory and watching the movements of the surroundings. They are to make sure that no intruders enter the clearing. In doing so, it is a Sentinel's responsibility to greet new visitors and learn why they are here and where they come from. Being in that position, it is the Sentinel's job to make sure each new Werewolf that comes into the clearing has good intentions as well. When the Sentinel is not present within the clearing or if there is none, the greeting responsibilities go to all Adult pack members.