By the time the UEPC was finally forced off the moon entirely there were only a handful of Lunar bases. Colonization of the moon proceeds very slowly without Earth assistance, yet it is happening. The OU-8's production is one of the strongest statements to lunar independence- specifically in the fact that a fighting line AXEL can be designed, manufactured, and operated entirely by lunar citizens.
As the OU-8 has become the standard mass-production unit of the entire Lunar forces, it accordingly comes in several color schemes specific to the base that they are deployed. Five Major Lunar colonies operate the OU-8 in distinctive colors, and with some exceptions generally local bases operate whatever scheme is of the closest base... if not the 'stock' color/camouflage.
Romer peak was the only one of the five bases constructed specifically for military use. Constructed from the beginnings of a lunar mine, Romer Peak is perhaps the best fortified installation on the entire moon.
Perhaps the largest lunar base, Copernicus was the first settlement constructed on the moon by disenchanted settlers and businesses from the Earth. It was the only Lunar colony for a long time and prospered with the exports. However, it was also a hotbed of anti-Earth sentiment and came to house political dissidents.
Plato was originally constructed as a penal export colony and prison for UEPC prisoners. It was a maximum security prison as well as a penitentiary and gulag. The revolt by the Lunarites freed many of these prisoners to integrate with Lunar society, though the worst of the criminals died in subsequent revolt attempts or were shipped back to Earth. Now, Plato is one of the major manufacturers of Lunar arms thanks to the re-tooled former work camps there.
Clavius base was seen as one of the last attempts by the United States to retain some autonomy from the United Earth government. Seeing the signs of change, many Americans who were unhappy with the UE government left for the Moon before it declared Independence. Seeing themselves as a modern-age version of the United State's founding, Clavius troopers are often nicknamed 'Minutemen'. This is an apt choice of words as the remains of America's Professional space military can finish a battle within minutes.
COLUMBO FUEL BASE:
Columbo was established as a fuel depot for all future lunar missions by the now-defunct 'Moon Mission Conglamorate', which had hoped to open the facility for all lunar travel. The falling out of the company's assets and Lunar independence barred the base's original goal, but it was quickly occupied by the Lunarites and reactivated. The base is also the site for oxygen mining and metals refining. However, it is also the most heavily guarded facility for the amount of exposure to space- sporting more laser turrets than any other base.
Axels, Agitators, and so on (C) Michael Ptak 2007