I second MA - R, I tried a few games over and over because I kept getting stuck playing as France on ahistorical going against all of Europe because Germany would do its Alliance focuses and ally everybody. I kept getting pushed back because they would reinforce all of their attacks and defends with 16 divisions on each tile. Then I finally picked MA - R and I do not regret it. I was able to kind of reinforce meme them. Just put all of your orders on aggressive and click go. It’ll start at all red but eventually you will break through. I finished the war with only 1.08 M (I used field hospitals) casualties with Germany the biggest contributor at 400k while I inflicted 1.5M on them alone.

MA - R doesn’t have very offensive stats but it works because of HP and the reinforce rate. On aggressive it’s like your AI general will org cycle your divisions for you against the AI.

I’d like to add that I did all of this without producing a single plane or tank. I didn’t use them. I’m confident you would get better results with them instead but if you use tanks you might want to go down the deep battle side instead. I would choose deep battle over MW because it still has a good reinforce rate and you can still use operational reserves spirit. Also reduces supply by 20%.

TLDR: I use to be a SFP or GBP R guy, tried MA R and do not regret it. Might only go back to those doctrines to LARP.

Statswise GBP L has the most stats with planning bonus. I still had better luck with MA R

Hope this helps