Second of all and almost as surprising is the turnout from your home province: apparently the Elector Countess has started to phase out crossbows in favour of handguns and things have not been going well, as thousands of former troops have rallied to Clan Angrund to seek their fortunes rather than trying their luck with newfangled gunpowder contraptions. Of roughly equal size are the detachment of various hunters, poachers, and woodsmen from western and northern Stirland. A lifetime living next to Sylvania, you're sure, will make the Badlands seem homey by comparison.
The third major category of volunteers are, in a twist of irony, caused by the very breakdown in civil order that prevented the Empire proper from assisting. First, there are Nordlanders who have abandoned their home province in the face of entire villages disappearing overnight to seek their fortunes where the danger is something that can be met with an axe to the face. Many speak darkly of the Norscan blood running through Nordlander veins, but none can gainsay their ability in combat, and what they lack in armour or tactics they make up for in strength and courage. Second, bizarrely, an equal number of Middenlanders - religious exiles, apparently, who speak darkly of conflict within the Ulrican church.