Operation: Brute Force was a limited-time event in Halo Infinite. It introduced the Chimera armor core inspired by the Jiralhanae (Brutes), alongside a 20-tier free Operation Pass containing armor pieces, coatings, and cosmetics. The event featured themed shop bundles and added new customization items focused on Brute aesthetics. No major gameplay changes or new modes were tied specifically to the operation, but it continued the seasonal content cadence of the game.