Niops Irregulars
The Niops Association could not be said to have weathered the time period of the Jihad well. Between their own civil war, predation by their neighbors the Marian Hegemony, and a full invasion and nuking by the Word of Blake, the Niops Association was frankly a wreck by 3085, one that, by 3145, still has not completely recovered.
One symptom of the damage done to Niops is the "Irregular Militia", the name the local government and their official Niops Association Militia (or NAM) has given to the various paramilitary organizations that cropped up during the Jihad and its aftermath, which can still be found playing a role in 32nd century Niopian society.
Theoretically answerable to the government and NAM, the Irregulars are generally beholden only to themselves and their local communities. Because they are not part of the regular Militia, the various Irregulars instead arm themselves with whatever they can scrounge up, locally make, or whatever interested parties, be they Marian, Free Worlder, Canopian or even Capellan, can supply them with.
The end result is that, unlike the NAM, the various units of the Irregulars have no commonality of equipment, doctrine or training between each other or, often, internally. Individual groups rarely get along, which is little surprise, given many of them were actively shooting at each other on a regular basis during Niops' civil war.
Once the Niops Association government was able to reform in the 3090s, the role of the Irregulars has diminished, but, much to the chagrin of the NAM, decommissioning the Irregulars’ military hardware has proven impossible. Niops strategic doctrine and Militia chain of command, therefore, places the Irregulars ostensibly under the control of the Niops Association Militia, though in practice, this control generally is limited to telling a particular Irregular group to stay in a specific area, out of the way of NAM forces, and to not shoot at friendlies: while the small Irregular groups tend to have more combat experience than the much larger NAM, they tend not to play well with others.
As of 3145, violence between Irregular militia units has dropped off considerably, but is not unheard of. The central government and Niops Association Militia have sought to channel this by proposing a Niops Olympiad, modeled on the ancient Martial Olympiad, current Solaris VII games and annual Noisiel Summer Games as an outlet for any remaining hostility and antipathy between the various Niopian factions. Whether this will prove successful remains to be seen, and the increased bloodshed and loss of Republic of the Sphere support, despite the relative unpopularity of the Republic, does not make the likelihood promising.
(This is a little something Chanman and I have been bouncing around since the Jihad books indicated the Wobbies nuked Niops. Each Irregulars group will have their own entry. At some point, we'll probably do a full writeup of the setting. Maybe.)