During the War of Sol, two blocs fought for complete control over the Sol System: the Alliance and the Coalition. The Coalition was composed of the communist nations of Russia, China, the Middle East, and Africa. For decades, constant fighting between the two factions ensued, with neither side gaining the upper hand for long. In 2160, the Alliance proposed and signed a peace treaty between the two blocs, but as the Coalition admiral headed to Europa (one of Jupiter's moons) to sign it, he ordered a Coalition fleet to de-cloak and attack the Alliance fleet, who had stood down from battle after hearing about the treaty. Instead of ending the war peacefully, they destroyed the French and Italian fleets and took control of all the inner planets, including Earth, and most of the outer planets, excluding Neptune. Two years later, the Alliance recovered the outer planets and began its assault on the inner planets. Eventually, the Coalition was beaten back to Mercury. However, by some unknown means, the Coalition gained the upper hand and began to counterattack, eventually retaking every planet in Sol.

After being defeated, losing the Sol system to the military might of the Coalition, a small fraction of the Alliance's survivors attempted to flee to Sirius. The Coalition attempted to pursue the Alliance sleeper ships to Sirius. Unfortunately, the majority of the pursuing ships were lost, their crews still in cryo-freeze to this day, according to Coalition medical experts. However, all was not lost. For years, the Coalition knew of the Sleeper Ship project. The nations building the vessels had their crews infiltrated. Spies found the Hispania most easy to sneak aboard, although hundreds of others managed to slip onto the others, particularly the Rheinland. When the Hispania arrived in Sirius, a series of explosions nearly destroyed the craft. Historians are unsure what caused it, but it was likely Coalition agents, acting as saboteurs, although plenty of other explanations are available. Many of the Coalition personnel that had successfully made it to the Sirius sector stayed amongst the people of the new Houses, acting as intelligence agents with lines of communication to the others, who had a quiet exodus to the Omega systems.

Some arrived in Omega-52, on Planets Volgograd and Jiangxi. They would, in minuscule numbers, slowly build structures on these planets, surviving in these tough landscapes whilst their comrades abroad prepared for the Revolution that was to come. There were also those on the planet which later came to be called Gran Canaria by the Zoners, living a life cut off from the rest of the sector. There was, of course, trouble in Rheinland, Coalition demagogues taking part in the Popular Revolution, but not having any great degree of success.

Some arrived in Omega-52, on Planets Volgograd and Jiangxi. They would, in minuscule numbers, slowly build structures on these planets, surviving in these tough landscapes whilst their comrades abroad prepared for the Revolution that was to come. There were also those on the planet which later came to be called Gran Canaria by the Zoners, living a life cut off from the rest of the sector. There was, of course, trouble in Rheinland, Coalition demagogues taking part in the Popular Revolution, but not having any great degree of success.

The small nation in the Omegas eventually came to be headed by one High Chancellor Aeon, who, having been discovered by the Alliance, after some fighting, attempted to sue for peace. The chief of his fleet, one Acting Commodore McIntosh, an allegedly insane, mass murdering Bretonian defector, brutally executed him, promoted himself to Grand Admiral of the Sirius Coalition Revolutionary Army, taking the role of head of state, and proceeded to wage war on the capitalist pigs of the Alliance with an absolute lack of mercy.
The Coalition, with its tiny population in Sirius, took on the role of a partisan uprising across the sector, taking in deserters, defectors and anyone that would fight under their Communist ideology.

Various events, of course, have passed since those turbulent times, years ago. Attempts to convince the Corsairs of the follies of capitalism failed, their leaders casting out those that would align themselves with the Coalition, such as Comandante Adrian 'Ares' o Jovem, and the crew of the Osiris class Havana, who defected to join their charismatic countryman. The Coalition would go on to attempt to expand and improve, casting aside old stolen and patched together technologies, one talented young engineer, Xing KeSi, putting together the designs for a fleet, whilst another team of engineers constructed stations in the Omega 52 system. In Omega-52, various stations were constructed, including the legendary Zvezdny Gorodok, Star City, the moon of Planet Volgograd which was hollowed out to produce and house the newly designed snubfighters of the SCRA's assault wings. Here they train and prepare for war. This system is off-limits to everyone but the Coalition itself and those who have the Visa from Coalition Border Control. Trespassers to Omega-52 are often shot without warning. Recruits would pour in from across the sector, and the Revolution would move to assist other, like-minded, parties across the Houses, putting particular focus on Rheinland, seeing it as a hotbed of radical thought. Many famous names would come to the Coalition from Rheinland, such as Admiral Kirk, Captains Richthofen, and Totenkopf, as well as the allegedly most decorated man in the SCRA, Commander Eugen Weise. At present Grand Admiral McIntosh, after falling ill with no cure at present having been created, was for his own safety and continued health preserved in a Stasis Chamber and placed in a 'tomb' in orbit of Zvezdny Gorodok where all Coalition pilots can pay their respects to their great former Leader and pray for his return to health.

After Premier Alvin Katz became a target for assassination, the Sirius Coalition Revolutionary Army carried out their orders of initiating Martial Law throughout Coalition space and territory. It was quickly discovered that Commandant Aloysius Rhade, the head of the Revolutionary Army, had staged the assassination in an attempt to kill Premier Katz and seize control of the Coalition. Shortly after the information regarding Rhade's betrayal was confirmed, Colonel Katya Vaschenko, head of the Coalition Marine Corps. deployed every resource at her disposal in order to eliminate Aloysius Rhade and anyone loyal to him. The details of Katya's mission, and Rhade's Betrayal, became public knowledge during the "Battle of the Duma", in which Coalition Marines engaged in brief but heavy combat with Rhade Loyalists who were attempting to secure the Duma Complex on Planet Volgograd in order to eliminate the Duma representatives and seize the Coalition seat of power. It is believed that Aloysius Rhade was personally executed by Colonel Vaschenko here, after having surrendered in disgrace to the Coalition Marines, when it became apparent that his Coup attempt would be a failure. As a result of the battle, and of the failed coup coming into public light, Premier Alvin Katz resigned from his position, ceding power to Colonel Katya Vaschenko who had recently become the Head of the Revolutionary Army as a result of the death of Aloysius Rhade. Since coming into power, Commandant-Premier Vaschenko has yet moved to lift the state of Martial Law which was declared in the wake of the failed assassination attempt on Katz, and it is currently not known if she will decide to do so. However, Katya's rule, while Militaristic, had not been as harsh as that of Grand Admiral MacIntosh, neither did she move to reverse the social and economic progress made by Premier Katz. Ben Warner is the current Premier of the Coalition, his time in office saw the strengthening of the Coalition's ties to its historical allies the Red Hessians and the Mollys while also establishing an iron-clad alliance with the TAZ who had been threatened by the Order, Premier Warner having seized opportunity provided military aid to Baffin to discourage further moves against them by The Order and cemented a TAZ-Order break. in addition Warner's sought to increase the Coalition's reach in the Omega systems, particularly Omega-49 which was under siege by the Corsair Empire and helped to unite the Mollys, Hessians, and Coalition into a united Triumvirate dedicated to eradicating Corsair influence in both the Omegas and the Omicrons. The Triumvirate's secondary motivation is to gain access to the rich resources of Cayman to fuel the war machine against both the Corsairs and the Houses in addition to any other territories in the Omegas that could aid in this endeavor.

Also referred to as "New Moscow", is the capital of the Sirius Coalition. The system contains 2 inhabitable planets, Planet Volgograd and Planet Jiangxi. The Coalition's capital city is located on Planet Volgograd. The Sevastopol station has been established next to Planet Tbilisi, the main H-Fuel source for the Coalition. Mykolaiv Research Station has its place in the orbit of Planet Odessa and serves as the only shipyard where the giant carriers of the Coalition can be repaired, as well as production and research facility. Zhukovsky station orbits Planet Jiangxi while Zvezdny Gorodok orbits Planet Volgograd.

Also referred to as "New Beijing" is the Sirius Coalition Frontier system. Kamchatka Base is the only station within Omega-55, that the Sirius Coalition controls. It was established to ensure the spread of its power within the eastern regions of the Omegas. Due to its fair range from Omega-52, the base is constantly being supplied by Coalition transports and occasionally also the Red Hessian movement.

Also referred to as "Minsk", is the controlled system of the Sirius Coalition. The system contains 1 inhabitable planet, Planet Tangier and 1 uninhabitable planet, Plamet Rabat. The Planet Tangier is controlled by the Sirius Coalition and this is the first administrated planet by the Sirius Coaliiton outside New Moscow. Madeira Base is located in El Aaiun Field and administated by Independent Miners Guild. On the orbit of Planet Rabat deployed Corsair's base Casablanca, covered by Battleship Athos. Minsk system contains 2 fields and one nebula, Melilla Debris Field, El Aaiun Field and Walker Nebula.