You need them to at least become an associate, thus improving relations with them is necessary. Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II … Just heading into the Maginot Line is going to be a suicide mission, so head through Belgium (Schlieffen 2: Electric Boogaloo) and Britain is almost certainly going to guarantee France or Belgium, so you can also bring down Britain with them. Yugoslavia to the south, Romania to the east, Austria to the west, and Czechoslovakia to the north. At least keep the Soviet border with Hungary intact. After Hitler breaks the Molotov-Ribbentrop Pact, you can join Comintern to get Stalin's aid in conquering states from Britain & France later on. You have a lot of planes as Germany anyways, you won't be needing 3k planes to … Please see the.