ONI Alpha Site



ONI Alpha Base is a facility of the UNSC Office of Naval Intelligence in New Mombasa, Kenya. It is isolated by water and is only accessible by a bridge running the length of the complex.

While operated by the Office of Naval Intelligence, the site is more specifically used by the local Section Two personnel - the information dissemination branch of ONI.

During the First Battle of Mombasa, a company of Marines and Shock Troops defended the bridge from a Covenant assault. Under heavy bombardment by numerous Type-25 Wraiths from across the bridge, the men of "The Squad" destroyed the bridge, halting the enemy force momentarily.

Despite the victory at the bridge crossing, the Alpha Base was still destroyed.