This consists of Cossacks, Mongols, Dragon riders, with or without steeds, wardancers, and any other decent fighters Hazard picks up on her travels. There are only about three thousand men in the army most of the time, but each one of them can generally account for any five of the enemy in battle. As only about five people can come at a DragonLord at once, and they are backed up by Cossack Cavalry, the Brigade is rightly feared.
The head of the Irregulars, under Hazard, is her friend Gelt Carl. It's rumoured that GC actually has no friends, but she organises the Irregular Brigade with her usual terminal efficiency.