Okay, I have a save game from Great War map on 2.0 (so save game compatible), where AI played badly.
For context, in this game, Ottomans and Austria is played by humans and all other countries played by AI.
Here are some particular dumb things:
Early on - e.g. Round 8 - Germany could attack US transports with some subs and sink troops. Yes, transports defend on a 1 on this map, but still, its worth it to sink troops. Also, US should be defending its navy better.
In Round 8, US builds a plane in US. There are no ACs on this map and that plane literally cannot make it out of there. Later in the game, it builds another.
In Round 10, Russia built some boats. Why?
In Round 11, Germany attacks with a bad force. It has lots of Artillery and infantry, but chooses to attack mostly with infantry. In general, it seems AI was not pairing up Artillery and Infantry in this game - and just left lots of Artillery behind - and moved them into the same territory after in non-combat. Why? (20 Artillery left behind:)
Round 13: Germany does a dumb attack on Crimea when Russia has a strong counter attack
Round 18: Russia is fighting for its life. It decides to buy Cavalry instead of defensive units.
In Round 20, lots of Artillery left behind. Attack with 22 infantry and 2 out of 31 artillery. WTF? (The red army is Ottoman who is on the same side as Germany, so no counter attack there.)
There's a bunch of other silly stuff in there, but those are some of the most dubious.
Some other things:
- AI was basically never buying planes in Europe.
- Western front battles were very wonky (between France AI and Germany AI). I think neither side played well.
- Germany spent lots of resources building fleets in the Mediterranean where it was not useful most of the game.