August-099

Like the other SPARTAN-IIs, August-099 was abducted at age six and conscripted into the SPARTAN-II program in 2517. She later survived the augmentation procedures in 2525. Along with Robert-025 and Leon-011, August formed the Spartan-II fast reaction unit Omega Team, which was created primarily for asset denial operations.

Omega Team is typically deployed with the goal of breaking the enemy's hold long enough in order to reinforce local defenses and buy time for a UNSC response. During the Human-Covenant War, Omega Team was deployed to several colony worlds threatened by the Covenant, assisting in emergency evacuation efforts and enacting classified last-stand protocols. The team proved highly proficient at the denial of critical resources, data, and even personnel to the Covenant by any means necessary, which sometimes required the deployment of weapons of mass destruction.

At some point in 2527, Omega Team may have been deployed against Insurrectionist forces in an operation on Hellas against insurgent forces employing the use of Rumbledrugs. However, it is possible that Omega Team was merely briefed on this operation rather than actively assigned to it.

On several occasions, Omega Team worked closely with Jerome-092, Alice-130, and Douglas-042 of Red Team, including during the defense of Arcadia when it was attacked in 2531. During the battle, they were separated when the UNSC Spirit of Fire departed the system to chase retreating Covenant forces. During the Arcadia Campaign, August worked alongside Leon-011, Robert-025, Kai-125, Riz-028, and Vannak-134, before the latter three were split off to form an independent Silver Team. In 2540, the full six-member roster of Omega was temporarily reformed and deployed to an unknown operation on Hellas.

In the late stages of the Human-Covenant War, or the earliest years of the post-war era, Omega Team was involved in the testing of numerous "Breach" development iterations on the MJOLNIR Mark VI platform. These field tests were successful, and saw improvements folded into later GEN2 and GEN3 productions.

Decades after Red Team's last encounter with them, Commander Jerome-092 discerned that Omega Team had survived the war based on UNSC records recovered from the Henry Lamb Research Outpost. By 2560, August-099 had become the leader of Omega Team.[11] In this year, the team was deployed to Arcadia once again, this time with goal of observing a deal between Adam Andrews—the CEO of Optican—and Kig-Yar working for Nor Fel. After a successful handoff between the two parties amid Forerunner ruins, August eliminated a trio of Kig-Yar with her M99A2S3 Stanchion while Leon-011 rushed for their Phantom and Robert-025 secured the aliens' prize: the focus cannon of a R'awuw-pattern Scarab. After clearing the Phantom of hostiles, Leon checked the cargo manifest, revealing that the Kig-Yar had supplied Andrews with rumbledrug and leading August to remember the Insurrectionists' use of the drugs in 2527 on Hellas as an attempt to even the odds against Spartans. With their objective complete, Omega Team left the area.

August-099 is noted for her fondness for hypervelocity weaponry. As such, she commonly employs the ARC-920 railgun and M99A2S3 Stanchions as her primary weapons. As of 2560, her Mark IV MJOLNIR ensemble includes an ARDENT-class helmet with a TAS/FES/BRONTES module, IMA/SGN left shoulder (with an attached bandolier to mount six M645 FTP-HE rounds), an IMA/GARITA/OMEGA SYKES right shoulder (consisting of a standard Mark IV Garita pauldron with a combat knife), and an RS/SPC/ISABEL chestpiece. August's left forearm includes the UTIL/CERJO prototype while her kneepads consist of the UA/TWISP upgrades. She sports a UTIL/ZEPO attached to her left leg.

The M99A2S3 Special Application Scoped Rifle is a weapon in the M99 Stanchion series of high-powered anti-materiel rifles.

The MA5C Individual Combat Weapon System, abbreviated MA5C ICWS and commonly known as the MA5C assault rifle, is a standard-issue service rifle for the UNSC Marine Corps and the Navy.

The M7/Caseless Submachine Gun (M7/SMG) is a personal defense weapon developed and manufactured by Misriah Armory.

The M90 Close Assault Weapon System (CAWS), also known as the M90 Close Assault Shotgun, M90 assault shotgun, or simply the M90, is a pump-action shotgun in service with UNSC.

The United Nations Space Command (UNSC) is the military, exploratory, and scientific agency of the Unified Earth Government (UEG) and has acted as the emergency governing body of the human race.

The Sangheili, or "Elites" as they are known by humans, served as the military leaders of the Covenant. The Sangheili are the only race within the Covenant permitted to build and command starships within the Covenant, though the crews are always composed of a mix of races. The Jiralhanae, or "Brutes" as they are known by humans, were the most recent addition to the Covenant, and served as soldiers and bodyguards within the Covenant military. The Lekgolo are a race of worm-like creatures that can combine to form large, intelligent assemblages called Mgalekgolo, known by humans as "Hunters". Clad in nearly impenetrable armor and armed with their trademark Assault Cannon, they served as the Covenant's heaviest ground troops. Hailing from Balaho, the Unggoy, or "Grunts" as they are known by humans, were the most common and low-ranking caste of the Covenant. They breathe methane gas, and thus must wear a large tank on their back full of methane to survive on other planets. The Kig-Yar, or "Jackals" or "Skirmishers" as they are known by humans, were the scouts and marksmen of the Covenant military due to their superior senses.

The D77-TC Pelican, commonly known as the Pelican, is an extremely versatile space-to-ground capable craft used by the United Nations Space Command, as well as being marketed toward law enforcement, security, corporate and civilian markets.] In its role as a tactical aerospace lifter, the Pelican is mainly for the pickup and transportation of personnel, vehicles and equipment, though some variants are capable of serving in the role of a gunship.

The Human-Covenant War was instigated by the High Prophets of the Covenant following a discovery which led them to believe that humans were directly related to the Forerunners, contradicting their ancient religion. Seeking to keep various political and religious orders intact, the High Prophets declared a holy war of genocide against the human species, and the discovery of their relation to the Forerunners was kept a secret. With superior firepower, numbers and technology, the Covenant would repeatedly overpower the UNSC across hundreds of human-inhabited worlds, including the heavily defended strongholds of Reach and Earth. Humanity would win only scattered and costly victories.