Joint Supreme Headquarters Alaska, JOSH-A (pronounced Joshua) was the central command center of the Earth Alliance after the fall of Victoria. The base was constructed by the two main powers of the Earth Alliance, the Atlantic Federation and the Eurasian Federation.
The JOSH-A base was destroyed in the Battle of JOSH-A by a Cyclops System, secretly installed under the base by the Atlantic Federation itself. While most of the base personnel are from Eurasian forces, after luring the ZAFT forces into attacking the base, the Atlantic Federation ignited the self-destruction Cyclops System, managing to 'kill two birds with one stone'. The attacking ZAFT force was mostly wiped out and the base itself was totally annihilated. This event tilted the inner Earth Alliance's balance of powers mostly toward the Blue Cosmos-controlled Atlantic Federation.
| Cosmic Era locations | |
| Space | |
|---|---|
| Apollon A | Armory One | Ame-no-Mihashira | Artemis | Boaz | Debris Belt | Development Facility Satellite | Dock | Erudou | Factory | Heliopolis | Jachin Due | L4 Colony Cluster | Liteiria | Messiah | PLANT Colonies | Troya Station | Yggdrasil | ZAFT Military Station | Zodiac | |
| Debris Belt Locations Graveyard | Junius Seven | |
| Heliopolis Locations Morgenröte Facility | |
| L4 Colony Cluster Locations Mendel | |
| Mendel Locations G.A.R.M. R&D Facility | |
| PLANT Colonies Locations Aprilius One | Junius Five | Junius Seven | |
| Aprilius One Locations Clyne Manor | PLANT Supreme Council Building | ZAFT Military Factory | |
| Junius Five Locations White Symphony | |
| Moon | |
| Arzachel Lunar Base | Copernicus City | Daedalus Lunar Base | Endymion Base | Lorenz Base | Ptolemaeus Lunar Base | |
| Earth | |
| Berlin | Carpentaria Base | Diocuia | Fortaleza | Gibraltar Base | Giga-Float | Gulnahan Ravine | Heaven's Base | Indian Ocean | Kaohsiung Base | Kirgitz Plant | Lagash Base | Lodonia Lab | Mahamul Base | North Africa | North America | Orb Archipelago | Orbit Traffic Observation Center | Red Sea | Reverend Malchio's Orphanage | Scandinavia | South Africa | South America | Victoria Base | Yap Island | |
| Diocuia Locations Diocuia Base | |
| Gulnahan Ravine Locations Lohengrin Gate | |
| Indian Ocean Locations Indian Ocean Base | Indian Ocean Island | |
| North Africa Locations Al-Jairi's Factory | Al-Jairi's Home | Banadiya | Desert Dawn Base | Moula | Suez Base | Talbadiya Factory District | Tassil | |
| Banadiya Locations ZAFT Banadiya Base | |
| North America Flaga Estate | JOSH-A | Panama Base | White House | |
| Orb Archipelago Locations Akatsuki Island | Kaguya Island | Onogoro Island | Sadeyori Island | Yalafath Island | |
| Akatsuki Island Locations Akatsuki Manor | |
| Onogoro Island Locations Morgenröte Headquarters | Morgenröte Underground Dock | Orb National Defense Headquarters | |
| Yalafath Island Locations Allster Family Home | Athha Estate | Ceremonial Temple | Orb Administrative Building | Seiran Family Estate | |
| Others | |
| Bautroya | Jupiter | Mars | |
| Bautroya Locations DSSD Supply Station |
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