Xavier de la Saint-Just de Ardevol Sirmium is here to reform the army. Because it really, really, really needs it. He's actually curious how it got this bad? He knows how the Molthuni army got, like, fifteen percent this bad - too much fighting rebels, not enough fighting armies - but Cheliax is insane. A quarter of the soldiers in Sirmium went back to arbitrary farms because theirs was too far away and conquered the farms and turned out the locals, who mostly became bandits. When he made it to the Archducal palace, nine out of every ten officers (who hadn't outright fled Cheliax) had abandoned their units to rush to the palace to swear their eternal to him and accuse their personal rivals of being unrepentant diabolists, and most of the tenth had also become bandits.
Hopefully they can give Her Majesty something of a hand with reforming it into something that can put the Empire back together - or, at least, that's the idea.