ORIGINAL: golden delicious
I don't think they'll raise those forces. The Allies will look at the cost of such a war and turn to "alternatives": blockade, an expanded strategic bombing campaign- and annihilation of Germany's allies abroad, i.e. Japan.
Might as well just sue for peace then. No blockade will work if the Germans control all the Soviet resources. And, as I said, even if they focus on Japan, the Japs still don't need the BBs - it took years to fight through their defense shield anyway.
The Japanese didn't tend to act in a rational manner in terms of grand strategy. Because of the way that policy decisions were made at the top level, all decisions tended to be a compromise intended to satisfy the honour of everyone involved. Hence insane policies like declaring war on the United States because Japan could not defeat China.
Assuming the enemy won't make the available best move is a sure path to defeat. The Japs needed oil, and to get it they needed to neutralize the US Pacific Fleet. It wasn't that irrational. It only appears irrational from the 20:20 hindsight of America's reaction to Pearl Harbor and that the Soviets survived.
I doubt it. By 1941 the British were aggressively patrolling over the French coast with fighters in order to force the Germans to engage them. Admittedly if the Luftwaffe is able to return to western Europe, the Germans can move the fight into the Channel- but I don't see them winning it there
By 1941 most of the Luftwaffe is in Russia. Yet the British still had to revert to night bombing.
Mm. From my experience in Colin's Seelowe I'd tend to disagree.
Oh my! Using results from a wargame as historical reference! Blasphemy!
If the British are able to get even a few bombers into the Channel it causes all sorts of problems. Of course, the RAF and USAAF bomber forces were much more developed by 1943. Figure without air superiority, the Germans are pretty much confined to the ports.
The US didn't have air superiority over Guadalcanal yet it succeeded. And consider the huge naval losses they suffered at Okinawa - didn't stop the ground action. The Axis would have something near to air parity. They would suffer some naval losses - as would the Allies. It could still allow the invasion to get through.
And remember that the Germans can now devote full production (enhanced by Soviet looting) to air and naval equipment. They already have far more ground forces than they will ever need in Britain. And they have the Italians. Don't judge the air situation by the historical 1943 situation.
And I'm not sure just how built up the US air force was in England at that time. I know some of the fighter squadrons were just British ones transfered to the Americans (the Eagle Squadrons). That, obviously, didn't add anything.