Thanks for the replies. I'd say I've lost about 1 unit on average per scenario, but I have "reform units" on - I want to play without reloading any saves, and I know that I'd just ragequit if I lost a well-developed unit with good heroes. It is possible that I should maybe play a bit more ...

I've just finished GC39 on General with DVs in all scenarios, however I lost quite a few units during the campaign. I read and the forums that you have to accumulate as much prestige as you can by 42, but I don't know how to assess my progress so far. I figured I'd check the GC40 default force compo...