UNSC Infinity (Demons of Hope)

The UNSC Infinity, hull classification symbol INF-101, was an enormous and extremely formidable UNSC warship, which was completed in late 2552. The most advanced vessel ever built at the time of its completion, the Infinity made use of reverse-engineered  technology, making it even more powerful than many  warships. Conceived by the Office of Naval Intelligence and during the early days of the  as an immensely powerful warship that would be able to decisively and single-handedly allow the UNSC to defeat the new Covenant threat, the Infinity began construction in 2537 deep within the Oort cloud, but did not finish its trials until after the conclusion of the war in 2553. Nevertheless, the Infinity became the flagship of the UNSC Home Fleet, and would come to play a major role in the not long after.

Holographic Training Deck
Designed by ONI's Delta-3 Division in collaboration with the, and constructed by , the Infinity ' s state-of-the-art holographic training deck is a feat of engineering as impressive as the Infinity itself. Utilizing a combination of a shifting floor, interactive volumetric displays, dynamic lighting systems, and reverse-engineered technology, the training deck can create environmental simulations that are visually indistinguishable from the real thing. Simulated environments are created by performing a series of scans of an environment, which are then archived by the training deck's central computer so that the system can recreate them at any time.

The SPARTAN-IVs stationed aboard the Infinity regularly participate in so-called "", in which the SPARTANs face off against one-another in a variety of different competitive combat simulations, allowing the SPARTANs to hone their combat skills, practice teamwork, and stay fit. War Games matches are treated like sporting events aboard the Infinity; live video feeds of the matches are broadcast throughout the ship, and crewmembers frequently make bets on their outcomes.