FIRST STRIKE is a sister modification to WINTER CONTINGENCY.
Though most Brute packs degenerated to tribalism and continued their bloodshed against the Elites and humanity after the Human-Covenant War, some older and perhaps wiser Jiralhanae sought out peace, and even alliances with their age-old foes.
The Lydus Clan, named after its leader (pictured here) is one such group.
"Every pack brother for himself! RAAARGH!"