Every generals grow older one year at the end of each winter months. Try opening your campaign_script.txt file in your Medieval II/mods/The_Sundering/data/world/maps/campaign/imperial campaign (with notepad), and search for this part (Ctrl + F):
Code:
12 TURNS PER YEAR SCRIPT
You'll see this:
Simply change all "summer" to winter. Then save and exit.
In order the changes should appear in game, you have to go to your \Medieval II\mods\The_Sundering\data\world\maps\base folder (or whatever it is called
) and delete your map.rwm file. Then you have to start a new game as it is not save game compatible.
Hope this helps, any feedback is appreciated!