Battle of Alpha Base

The Battle of Alpha Base was a military engagement on Installation 04 between the UNSC Marine Corps and the Covenant Army.

Beginning
The battle began when Lieutenant Rick Hale was forced to trick Alpha Base into landing and letting Stealth Elites infiltrate the base to try and kill the Master Chief. The Grunt Yayap had been given up as bait to the UNSC, as he was fitted with a signaling device that he could activate if he saw the Master Chief in the Human Base. Yayap glimpsed the Chief, and activated the device, summoning a group of 30 Stealth Elites in a stolen Pelican to the base.

However, the Master Chief would be gone by the time the battle began.

After Infiltration
Whilst the Elites had stolen the Pelican, they had captured Rick Hale, a UNSC Lieutenant that they could use to infiltrate the defenses of Alpha Base. The Pelican approached, and under the threat of death from the Elites, identified himself to the Base.

As the UNSC had already established that the dropship was missing in action, Wellsley, the base's A.I., became suspicious. But before he could issue a warning, the Pelican touched down, Rick Hale was killed in the cockpit, and the invisible Stealth Elites streamed out of the ship onto the ground of Alpha Base, killing all the Marines in sight.

Though the Marines managed to contain and slaughter most of them, a small group escaped into the corridors of the base, wreaking invisible havoc in their search for the Chief...

Then the main invasion force arrived in the form of six Covenant Spirits. A pair of autocannons controlled by Wellsley took out one, but the rest landed upon the open ground, deploying a wave of troops onto the top of Alpha Base. However, there was no cover, and UNSC snipers knocked down the advancing army like dominoes. Two buried Scorpion tanks used their heavy artillery cannons to blow craters in the center of the Covenant ranks.

The Spirits strafed the Marines with plasma, evening the odds, but soon the entire Covenant wave was decimated, along with their commander, Noga 'Putumee. The Spirits had no choice but to retreat, their mission a failure.

The captive Grunt Yayap, showing a level of imagination unusual for an Unggoy, convinced an Elite that the Master Chief was stationed on the opposite side of the base. The two made it there, where they found a squadron of unguarded Banshees, but no Master Chief.

Yayap drew his plasma pistol, aimed it at the Elite's head, and told the overpowered Elite to take him away in a Banshee.