Battle of Circinius IV

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John-117: "You're the only survivors."

Michael Sullivan: "In the school?"

John-117: "On the planet."

— John-117 notifying the cadets of the planet's near-total fatalities.

The Fall of Circinius IV was a battle between UNSC and Covenant forces on the colony of Circinius IV in mid-2526. It was not only one of the first battles of the Human-Covenant War, but also one of the first deployments of SPARTAN-IIs.

Prelude

After the first engagements on Harvest, ONI Section II kept the Covenant invasion secret from a large portion of the general population. This included the cadets and staff of the Corbulo Academy of Military Science on Circinius IV. However, the academy's superintendent, General Black, was informed. As preparation for a possible attack, Black discreetly increased the readiness of the UNSC Marine garrison posted in the academy and authorized limited communications blackouts under the guise of routine maintenance procedures.

Battle

"We're under attack!"

— Cadet Thomas Lasky

At some point in 2526, the Covenant began an assault on Circinius IV, targeting the Corbulo Academy of Military Science with three SDV-class heavy corvettes. Locally stationed Marines provided an initial defense of the academy and the evacuation of the cadets via the school's space elevator was begun immediately. Orbiting UNSC vessels soon deployed Orbital Drop Shock Troopers directly onto the campus. However, one of the Covenant corvettes fired on the elevator, causing it to collapse on the school and halt the evacuation. Since all the cadets and staff had converged near the elevator for evacuation, the collapse of the elevator killed many members of the academy. Moments later, the survivors came under attack by Sangheili and Kig-Yar troops.

Corbulo's officer cadets were caught off-guard by this attack. General Black was killed within minutes of the attack; Colonel K.L. Mehaffey attempted to organize the surviving cadets inside the tunnels, though she too was quickly killed. Soon, whatever UNSC forces left were eliminated and four members of Hastati Squad, Cadets April Orenski, Thomas Lasky, Chyler Silva, and Michael Sullivan, were the only human survivors on the entire planet. SPARTAN-II Blue Team were then subsequently deployed in response to the cadets' distress beacon. Spartan John-117 infiltrated the besieged school and arrived just in time to rescue the cadets from a Sangheili Zealot. He then broke open the cadets' weapons lockers and allowed the cadets to arm themselves.

The Spartan led the survivors to the academy's exterior, where they were ambushed by Kig-Yar snipers. Cadet Sullivan was wounded during the firefight, but survived. After dispatching the snipers, they retreated from the combat zone in General Black's personal Warthog. During the drive however, they came under heavy fire from more Kig-Yar. Silva was killed by a Needler round, and the rest of the group was attacked by a pair of Hunters. John-117 depleted all his ammunition killing one of the Hunters, and was left with only a single grenade. He planned to take on the remaining Hunter alone, buying the surviving cadets time to escape. However, Cadet Lasky volunteered to distract the Hunter while John got into position. Lasky successfully drew the Hunter's fire, allowing John to plant the grenade under its armor. The resulting detonation blew the Hunter to pieces.

As morning arrived, the group reached their Pelican dustoff point without more casualties just as the Covenant began glassing the planet. Impressed by Lasky's courage, John gave him a fragment of the Hunter's armor.

Aftermath

While the academy and virtually the entire planet's population were wiped out, the battle would have a lasting impact on Thomas Lasky, who, inspired by John-117, decided to stay in the UNSC, eventually rising to the rank of Commander within the Navy. Following the war's end, Lasky became the XO of the UNSC Infinity. In 2557, thirty-one years after Lasky first met John-117, he would be reunited with the SPARTAN on the Forerunner world Requiem. Once again, they would work together, this time to save Earth from the Ur-Didact.

Gallery

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  Three Covenant corvettes descending toward Corbulo.

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  A Sangheili Zealot leads the ground assault on Corbulo.

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  UNSC forces fighting the Covenant at Corbulo Academy.

• Carbulo attack.png

  UNSC ground forces are slaughtered in the ensuing attack.

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  The Covenant glass Circinius IV, beginning with Corbulo Academy.

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  John-117 surveys the wreckage of Corbulo.

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  John-117 leads the surviving cadets away from the destroyed Academy.

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  John-117 fires the Warthog's turret at Covenant troops.

List of appearances

• Halo 4: Forward Unto Dawn (First appearance)