The map is based on the Battle of Czarnowo (https://en.wikipedia.org/wiki/Battle_of_Czarnowo )which was fought in the night between the 23th and 24th December. The real battlefield was actually not so hilly, but I think it looks better. It has some christmassy objects like a tree...
The Mansion :
Uluru (you can't go up on the mountain [barricades] )
The map is based on the Uluru-Kate Nationalpark in Australia.
Cav vs Cav
"Aborigines(Partizani) vs British Empire"...