Master-pack

A Master-Pack is a Jiralhanae organisation far above the level of Pack. Incorporating a large number of smaller Packs, it is likely that Master Packs are more like a political body than a military organisation, with packs serving as the military branches.

Prior to the Jiralhanae's discovery by the Covenant, rival Master Packs had waged widespread mechanised warfare against each other of such destruction that it reduced their species to a pre-industrial state.