A new colony constructed after the end of the First Alliance-PLANT War. Armory One is located at Lagrange 4, far from the PLANT homeland in Lagrange 5, and serves as a military arsenal for the ZAFT forces.
In September C.E. 73, PLANT's new chairman Gilbert Durandal invited several reporters to the colony to watch a performance of ZAFT's newest mobile suits. Among these journalists were PLANT-news reporter Bernadette Leroux, freelance journalist Jess Rabble as well as Kaite Madigan. During the testing however several incidents happened.
On October 2, C.E. 73 Orb Union representatives Cagalli Yula Athha and Athrun Zala (who went under the codename Alex Dino) met with PLANT chairman Durandal at this colony to discuss the military use of Orb's technology by PLANT. On the same day, the Earth Alliance's Phantom Pain special forces unit attacked the colony. Three of their new Extended pilots - Sting Oakley, Auel Neider and Stella Loussier - were able to sneak into a mobile suit hangar and steal three of the new Gundams, the ZGMF-X24S Chaos Gundam, the ZGMF-X31S Abyss Gundam and the ZGMF-X88S Gaia Gundam. While escaping, they attack the military facilities and cause massive damage to them, before they are engaged in battle by Shinn Asuka in his ZGMF-X56S Impulse Gundam. They are nevertheless able to escape to their mothership, the Girty Lue, which in the meantime attacked the troops stationed outside the colony. To pursue the enemy ship, the Minerva was launched. The situation of the colony after that is unknown.
|Cosmic Era locations|
|Locations in space|
|Ame-no-Mihashira | Aprilius One | Armory One | Artemis | Boaz | Heliopolis | Jachin Due | Junius Seven | Mendel | Messiah | Yggdrasil|
|Locations on the moon|
|Arzachel Lunar Base | Copernicus City | Daedalus Lunar Base | Endymion Base | Lorentz Crater | Ptolemaeus Lunar Base|
|Locations on Earth|
|Carpentaria Base | Gibraltar Base | Gulnahan Ravine | Heaven's Base | JOSH-A | Panama Base | Victoria Base|