long Campaign

[Marek_Tucan]

Re enemy experience, the enemy units would be of the given countrie's given timeline quality as set in country attributes. If you say wanted enemy ultra-elites, you may alter the settings in Preference screen prior to the battle.

[DRG]

The AI does not advance units in experience during a campaign as a human player does when playing a campaign. It always starts each game with "standard" troops.

Don

[Mobhack]

Your core will increase in quality, and therefore cost, plus any additions you make to your core as you progress will add points value to your core, before you buy any support troops in a battle.

As your core value (+ any support bought) increases, so the AI side will get more points to spend, and so field a larger force against you as time goes by.

Cheers
Andy