neither Germany nor France are really considered winter wonderlands.

That's precisely why I didn't include these campaigns in the (not exhaustive, but long enough) list of wars between Nordic countries.

By the way, these wars kept happening for six centuries after Alexander Nevski's victory on the Lake Peipus. It looks like it took them a lot of time to figure out cocooning is better than fighting a war...  

"People only accept change when they are faced with necessity, and only recognize necessity when a crisis is upon them." - Jean Monnet