An Earth Federation Forces' base located on the moon. Residents of Olivernotes were evacuated to a colony located here during the Vagan invasion of Earth in A.G. 164. It fell to Vagan hands after Base Commander Aaron Simmons defected in A.G. 164 and served as the rear base of the Vagan's Earth Occupation force. After defeating the Vagan forces at Rostroulan, the Earth Federation eventually launched an assault to recapture the base.
The Bisidian led by "Captain Ash" aided the Federation forces in an attempt to restore the balance between the two sides. The Federation forces initially had limited success in breaking through the Vagan defense lines. Due to this stalemate, former Commander-in-Chief Flit Asuno advised Admiral Frederick Algreus to use a plasma diver missile, which would have destroyed the base almost completely.
The Earth Federation achieved victory after Seric Abis's team infiltrated the base, with the aid of the Diva's Photon Blaster Cannon. Inside the base, Seric warned the Vagan forces in the base's command center of the plasma diver missile. This resulted in the Vagan forces ceasing combat activities and retreating. The Vagan forces still left within the base were captured and the Federation reclaimed the base.
This battle is notable for being the first combat deployment of the Federation's most advanced mobile suits, the AGE-FX Gundam AGE-FX piloted by Kio Asuno. The Gundam AGE-FX is a powerful X-Rounder mobile suit which played a key role in this battle and throughout the rest of the conflict with the Vagans.