okay here is what I do take (1sub, 1fighter) to 109 (2subs, 1fighter, 1tatical) to 110 and 111 (battelship cruiser fighter tatical) to 112
(infantry, artillery) to Normandy (5infantry, artillery, 4 mech, 5tanks, bomber) to France
-this will let you take out most of the RN with just subs as loses and there will nothing that the U.K. can do take europe.
france will be controlled by Germany.
just build a destoryer in seasone 112 to prevent fighter attack on your navy.
build a minor factory in Romaina this will frist let you build units in a better position in eastern europe + let you build subs for the med. with this and Normandy you should be able to help out Italy enough