Looks like an interesting story in the making, mate. I haven't yet had the pleasure of reading an AAR focused on one of the Imperial states other than Prussia. It makes for quite a 'niche' narrative - I like the idea that this is Hanover's only army, fighting in an expedition away from home which has swept up a lot of random commoners like Hans and Gustav looking for adventure. Will be interesting to see how the battle goes.
Your writing is as good as ever and the pacing is nice - getting things moving and enticing at the end of each chapter.
If I'd have criticisms, aside from a some puny grammatical mistakes it'd be more on the level of authenticity. I think even from the perspective of two simple dudes, more of a deal could have been made about the conflict itself, and the idea of joining Prussia in war against the Emperor of the Reich. Historically, when the Elector of Bavaria decided to throw in his lot with the French during the War of the Spanish Succession, it was a grave move that caused a lot of fear and dismay from among his people. It was a clearly momentous decision which put him at risk of losing all of his territories under an Imperial Ban, yet I'm assuming that part of his cause was the perennial rivalry for predominance in the Empire between the Habsburgs and Wittelsbachs.
Will we get a glimpse of what motives Hanover has to side with Prussia, or of the larger issues at stake in the war or its causes? Some background fluff like that might be cool.
Another thing is the role of the colonel thus far. I think that in almost all European armies of the 18th century, it was exceptionally rare for colonels to have much direct contact with the individual soldiers under them, and in a casual way almost never. I have the impression that in Imperial forces it would have been no different, with colonels as somewhat distant, aristocratic figures and most of the troopers' training, discipline and contact outside of the battlefield being overseen by subordinates of some sort. In that way the colonel's conversation with the two soldiers was kind of unconvincing in my view, though of course I can't claim to know about the particularities of every colonel of every army of the 1700's
Either way, please do keep up the writing. +Rep