Tribble #491
Rather than committing to the Exodus, Aleksandr Kerensky instead throws in with Jerome Blake to try to hold the Star League together. Using the core worlds of the Terran Hegemony as a jumping off points, SLDF Corps and Divisions set out to act as peacekeepers by engaging and subduing the armies and navies of the House Lords as they waged war on each other.
While the SLDF was the largest single military force still in the Inner Sphere, it wasn't the equal of all the House's armies combined. Their logistics had never recovered entirely from the Amaris Coup and the readiness of many SLDF soldiers to fight against the armies of their home nations was often questionable. Nonetheless, they still had a degree of technological advantage and their personnel had unparalleled combat experience.
For a while it seemed to work, except that the House Lords did not give up. They adapted to the situation and now anticipated SLDF intervention. Conflicts escalated with weapons of mass destruction being used by all sides. The military intelligence arms of the Great Houses pulled out all the stops to subvert the SLDF's commanders and soldiers.
By the early 2790s General Kerensky realised that his strategy wasn't working and shifted the focus to crippling the military production of the Great Houses, hoping that this would force them to stop fighting. The fact that the SLDF's sources of equipment simply hadn't recovered to the point they could make good the losses they were taking was also a factor - in the long run Kerensky had needed to - and failed to - win the war psychologically.
Given broad authority to determine what industries were military and strategic, hardened veterans of decades of war set about taking the war to the core worlds of the five Member States. As the House Lords responded, the situation escalated and raids struck deep into the Terran Hegemony - one of them killing Kerensky's deputy, General Aaron DeChevalier in 2799. Shortly after the death of his old friend, Kerensky authorised strikes on the capitals of all five Member-States.
The HPG network was no longer a coherent network since the Houses had realised Terran control of this would place them at a terrible disadvantage and seized or destroyed every station they good. Three weeks after the strike forces departed, Aleksandr Kerensky suffered a fatal stroke. Within months, the Member-States had been functionally decapitated - only one House Lord was dead but the infrastructure of their core bureaucracies were shattered.
Even this, however, couldn't stop the Succession Wars. Worlds and provinces broke away from central authority and border armies took advantage of openings that resulted. With no clear successor to Kerensky, the SLDF fractured into dozens of factions and even Terra itself found itself fought over.
The resulting chaos seemed unending, until 2821. After two decades of silence, Aleksandr Kerensky's sons Nicholas and Andery had returned from the Outworld Marches. After their father's death, the two young men had rallied several divisions and shiploads of machinery to evacuate Terra as the SLDF regiments turned on each other. In a remote corner of human space they had arrived as saviours to the collapsing economies of the outlying worlds of the OWA and forged a new nation and a new military force.
They were called the Clans and their intention was nothing less than the complete reunification of humanity under their leadership, and the reorganisation of all human society upon the 'rational model' which they had already applied to the Wastes...
Edit:
I'd envisage that the Clans are rather larger here. 25 Clusters of 40 Bloodnamed Warriors (and a varying number of unblooded warriors depending on exact composition) per Clan, for 1,000 Bloodnamed per Clan. This means that each of the five task groups sent out to bring the Inner Sphere to heel would have had 100 Clusters at their disposal. On the other hand, their warship strength is lower - typically one capital warship or 2-3 smaller ships per Clan.
The Task Groups are as follows:
Task Group Alpha: Clans Ghost Bear, Blood Spirit, Steel Viper and Star Adder. Coreward regions of the former Draconis Combine, Lyran Commonwealth and (eventually) the Rim Worlds Republic.
Task Group Beta: Clans Sea Fox, Ice Hellion, Coyote and Cloud Cobra. Rimwards regions of the former Draconis Combine and corewards regions of the former Federated Suns and Terran Hegemony.
Task Group Gamma: Clans Nova Cat, Mongoose, Wolverine and Snow Raven. Coreward regions of the former Capellan Confederation and Free Worlds League, rimwards regions of the former Terran Hegemony
Task Group Delta: Clans Fire Mandrill, Widowmaker, Goliath Scorpion and Burrock. Rimwards regions of the Federated Suns and Capellan Confederation, as well as the Taurian Concordat.
Task Group Episilon: Clans Hells Horses, Jade Falcon, Wolf and Smoke Jaguar. Former Magistracy of Canopus, rimwards regions of the former Free Worlds League and Rim Worlds Republic.