nope
You may defend together but never attack since the UK ships are not “placed on the battleboard” they can take no hits.
I’ve played half a dozen Enhanced rules games and obviously the national advantages set up the nature of the game. Assuming you are not trying to make things difficult the following seem to be the best choices, but I’d be interested to know if there are any glaring omissions
No brainers
Japan- Banzai
Russia- Siberian Conscripts
UK- Commonwealth
US Reinforced Carriers
Barely brainers
US- Pacific troops
Perfectly acceptable
Germany- 88s, Wolfpack, Afrika Korps, Divebombers
Japan- Tech advantage, Yamamoto, Kaiten, Kamikaze
Pointless given better and more flexible alternatives
All the rest
(I think Panzerblitz may allow clever manouvres but I haven’t yet worked them out)
Trusty
wrong section to post these . put them in house rules. This forum is only for the OOB game.