how to upgrade unit ?

[BlackStarMadness]

Originally Posted by davide

Ok, during the change of scenarious it is possible upgrade the unit.
On the right of the unit managment screen there is a button with a up arrow to choose a new compatible unit type: a paesant could be upgrade to last footman unit type available in the current campaign.

I have an other question ...

I upgraded a Paesant level 5 to a level 5 Halbierd ...

I thought that after an upgrade the upgraded unit has level 0...

Has someone a game crash after choose a new perk on level 6 unit ?

i did not