Ohh, this looks really nice! I like the weathering of the vehicles.
I also built Trumpeter´s 10cmK18 (it looks like this), but my cannon lost one of its wheels and it have to be fixed.
It was placed in a snowy scene, but it´s not an "in action" dio.
Ahh, the s10cmK18 and its "bigger brother" were mostly transported in "full recoil" position, for a shorter appearance and better "handling" of the gun in travel.
greetings...
Soeren