Feral must have been thinking about the mongols in the main campaign because they do not exist at the beginning of the campaign, but it is entirely possible - see my post here. All of that is not required for the Teutonic campaign however, a simple moving of the entry as you describe should the deed.
Make sure your descr_strat.txt entry looks like underneath - you should obviously keep a copy of the original file in case something goes wrong.
Code:
campaign imperial_campaign
playable
teutonic_order
lithuania
denmark
novgorod
mongols
end
unlockable
hre
poland
end
nonplayable
norway
kalmar_union
slave
end
Last edited by Gigantus; April 16, 2024 at 10:23 AM.