We have perfectly good Bofors 40MM acks on the ships. These guns were used everywhere in WWII. Replace the 37MM with dual Bofors on the airfields. Also locate some in the towns.
The 40MM on the PT was one deadly piece of work when the PT first came out. However, over the years has been dumbed down to a BB gun.
Anyway, Bofors 40MM on the airfields to be historically correct (Allies). Germs used quad 20's and 88MM (a super gun).
Ack is pretty weak at the moment in AH.
Cheers
Majors
249RAF
Oldest Yank in the RAF