Well, it is indeed a real war these scenarios are based on. The Trondheim campaign is most often refered to as "The Carolean Death March" or "The Armfeldt Death March". It took place in the end phases of the Great Northen War 1699-1721. In short it was failed Swedish attempt to capture the city of Trondheim during autumn and winter of 1718. The campaign had very few(if any) set battles, but a number of small skirmishers, which is ideal for a big skirmish wargame like this. There are number of rather intersting troops types involved, like ski troopers, snow sled artillery and weird militias.