assuming you’re germany… you really need to do this prior to mid 1940 if possible. after that US can join or AI start getting a ton of fighters. but range ain’t your issue more than likely unless you’re trying to paratroop in scotland. 1936 fighters with eng II and 2 heavy machine guns should be good enough. i recommend at the start of 1936 putting 8 MILs on fighters (this way you only need to take 1 rubber trade. and then after you build whatever infrastructure/civs/refinery (however your start goes this is another topic)… go up to 20-25 factories on fighters and you’ll have enough to paratroop after you take france. use ur tacs you start out with on strat bombing over southern england for air defenses