Allied Invasion of Japan

@andrewaagamer

The fact that there weren’t many divisions in Germany at the time. Obviously Germany would have brought several armies if they landed in Berlin, but maybe they could have assassinated some top Nazis beforehand.

@martin-of-tours

Based on how the Japanese command and the decisions they would have likely made, there would have been almost no impact on the war. The Iowa class battleships, which were awesome, but arguably had little impact strategically would have had their resources shifted to speed up the building of the Essex class carriers, with little expense on the Soviet Union or the British. The US would not need to defend California or even shift resources for it-the US can easily just activate their militia (remember the Second Amendment). Japan would not have invaded (or even thought of) invading the continental US, and capturing Midway or Hawaii (a formidable task in itself) would still have made it hard, if not impossible, to win in an invasion. Japan would have needed more ships and men than planned for Operation Downfall, which would be impossible, considering only the US could muster that large of a force. Japan would also have to deal with China, the threat of the Soviet Union, and the British. It would have been a waste of a victory, as Japanese troops would probably have been slaughtered on the beaches of Midway.

Now if the Japanese political and military leadership was headed by people who know what they’re doing, then absolutely! This would have set the US back quite a lot. The Japanese then should have adopted a strong dug in defence, operating the capital ships only in range of powerful land based aircraft and submarines, coming up with an effective convoy system, and working with the army to coordinate operations. This could have taken up so many US resources to beat that the Soviets would have had a lesser victory at Stalingrad, and Rommel could have held out longer in Tunisia if there were less forces in Operation Torch.

The best thing for the Japanese to do, of course, is to attack the Soviet Union. The Far Eastern troops were grossly exaggerated by the Soviets (which the Japanese willingly believed after Kahlkin Gol), and replacements for the ones that have been siphoned off west were generally worse, with little training. The Japanese air force was less outnumbered by the Soviets than the Germans were, and had even more of a quality advantage. The Japanese could have easily destroyed most of the Soviet Pacific fleet in days, destroyed the Red air force in an even more total fashion than the Germans did, and captured Vladivostok. Japan’s decisions are kind of stupid when they basically thought that they had a greater chance of defeating the US, a nation that has had their resources not yet tapped in any way (except Lend Lease) than the Soviet Union, whose cream of forces were destroyed in 1941, their replacements almost always understrength (most Soviet cavalry divisions were less than a third of a real division, rifle and tank brigades were only a quarter of even a small World War 2 division, and rifle divisions were only half as effective as a German infantry division), suffered enormous equipment and officer shortages, and had horrible logistics. In addition, many Soviet units had little training, and were expected to get that on the job fighting, leading to huge casualties. And that’s the west! The Far East forces were infinitely more inferior. As for oil, Japan could have reduced American unhappiness by doing withdrawing partially from French Indochina and reducing operation in China, both of which are necessary anyway for mustering forces. Diplomatic decisions are much easier to reverse than military ones, and the US would have saw the invasion as a removal of a threat to American interests in the Pacific (both Japan and the Soviet Union would have their hands tied up). Coupled with a better German strategy, the war in the East could have been won in 1941.

I strongly recommend you read Nigel Askley’s books, who give the most detailed account of Operation Barbarossa, detailing German and Soviet mobilisations, production values, and reinforcements, all used for a war simulation. I haven’t bought them all and don’t read them entirely (only the parts I’m interested in), but they are very good books, and more are being written. The part about Soviet Far East forces (Volume 3B) is very well done, and they also cover the Soviet and German air forces and navies.

Besides anyone with knowledge knows that Kam. Pilots were all volunteers and only existed out of desperation.

@CWO:

Intereting hypothetical question.  One amusing aspect is the idea of Hitler, with his long track record of breaking treaties and of attacking other countries without warning, expressing shock over Japanese treachery – though I guess it’s not unimaginable, since the same track record basically shows that he was quite capable of changing his foreign policies in any way that he felt served his interests at any given time.  And relations between Germany and Japan were not always cordial.  For instance, Germany supposedly expressed shock over the Rape of Nanking and offered itself as a mediator between China (with whom I think it had a degree of military advisory relations) and Japan.  And Japan was highly annoyed when Germany signed the August 1939 nonaggression pact with Japan’s old enemy, Russia.

Even taking Hitler’s impulsive and erratic nature into account, however, it’s pretty hard to fathom why he’d declare war on Japan in December 1941.  The two countries were partners under the Tripartite Pact, whose bottom line was, frankly, that Germany and Japan agreed to stay out of each other’s way as each nation pursued its expansionist policies on opposite sides of the globe.  A war between the two countries, even if it had been declared, would have been virtually impossible to wage since German and Japan were separated from each other by vast stretches of land (notably the USSR, which was unfriendly to both countries) and ocean.

It’s even harder to fathom why Hitler would offer support to the US in December 1941, since the Americans were actively supporting its enemy Great Britain.  I can understand Britain’s wartime partnership with the USSR against Germany, on the principle that “the enemy of my enemy is my friend”, but Hitler’s support of the US would have been a case of “the friend of my enemy is my friend”, which makes no sense.

Just for argument’s sake, however, I’d guess that if Hitler had inexplicably offered to the US a wartime alliance against Japan, the Americans wouldn’t have accepted it.  Nazi Germany was, to put it mildly, neither liked nor trusted by the Roosevelt administration, and its reaction would probably have been to treat a partnership proposal from Hitler like the offer of a bottle of poison.

it’s pretty hard to fathom why he’d declare war on Japan in December 1941.

I don’t want to speak for Gargantua. But it’s possible that the goal of this declaration of war would be for Germany to distance itself as much as possible from Japan’s Pearl Harbor attack. The underlying objective would be to make the political climate in America less favorable for going to war against Germany.

Nazi Germany was, to put it mildly, neither liked nor trusted by the Roosevelt administration, and
its reaction would probably have been to treat a partnership proposal from Hitler like the offer of a bottle of poison.

The goal of Stalin’s foreign policy was to foster war between Germany and the Western democracies. Stalin hoped to achieve this goal by promoting “anti-fascism.” The Soviet Union would stay neutral in this hoped-for war. This war would weaken both Germany and the Western democracies. Ideally it would be like WWI, and bleed both sides white. That war would set the stage for Soviet expansion westward into Europe. The first stage would be at the expense of Germany and Eastern Europe. The second state would be at the expense of France and possibly other Western democracies.

FDR was extremely eager to embrace the pro-Soviet, anti-fascist foreign policy Stalin envisioned for Western democracies. I don’t see anything Hitler could have done to change that. He didn’t begin to have the kind of penetration into the FDR administration Stalin had. Nor was there any readily available way for him to achieve that penetration. FDR hated Nazis and other Germans, but was very intrigued by communism and by Stalin. It was this mindset which allowed a number of outright communists to achieve positions of great influence in his administration, while anyone with right wing views was either excluded entirely or eased out of any real policy-setting role.

But FDR did not work in a vacuum. Had it been up to him, the United States would have declared war on Germany back in the '30s. The fact it did not do so was because due to strong isolationist forces. While FDR and his allies in the media were working diligently to weaken those forces, even by December 1941 they were still strong. Had Germany declared war on Japan in December '41, it would have been a clear, simple statement. Even FDR and his allies would have found it difficult to distort that statement into something which made war with Germany seem necessary.

By the time of the Pearl Harbor attack, the American pro-war faction had built up too much political momentum for a German declaration of war against Japan to stop them. Sooner or later, the pro-war faction would succeed at getting America into the war; much like it had succeeded in WWI. Even over the short-term, the pro-war faction would still have been able to send large quantities of weapons to Stalin and the Soviet Union, as well as to Britain.

Let’s say that declaring war against Japan would have bought Germany two years of nominal peace with America. While Germany would still have had to deal with large numbers of American made weapons during that two year period, at least it wouldn’t have had to face American soldiers. That two year grace period would have allowed Germany to concentrate more of its military force on its eastern front, instead of having to use as much strength defending against potential or actual Anglo-American invasions elsewhere. (Though they would still have had to defend against the Anglo half of that threat.)

That concentration of force against the Soviet Union would undoubtedly led to a more favorable situation on Germany’s eastern front. More victories, more Soviet soldiers captured, more conquered Soviet land. But I do not think that this alone would have been sufficient for Germany to win the war in the east. In the absence of other factors helping Germany, the German objective on the eastern front should (in this scenario) have been to grab what land it could in the western U.S.S.R., including at least some of the Caucasus oilfields, and then negotiate peace with Stalin. The more successful Germany was on its eastern front, the more presumptively likely Stalin would have been to negotiate an end to hostilities.

This peace treaty would by no means have represented the end of the war. It would merely indicate Germany had survived the first phase of the challenges ahead of it.

It could have made a difference I think, the brits could still not beat the blitzkrieg then.

And their army was 10x smaller then the italian, whose moral would raise by the arrival of the germans/first defeats of the british.

But of course, malta should be taken first.

@Imperious:

For a few days, then we clobbered them. Italy not so much.

The terrain of ITALY is very difficult do not forget…  AND  the forces deployed there were serverly short of supplies and new troops due to the build up for OverLord.

The Soviet didn’t have capability to invade Japan, they just had claims to Sakhalin Islands and possibly Korea which they lost in the 1905 war. The A-bomb created a huge vacuum for Stalin to mop up demoralized Kwangtung Army units in Manchukuo.

Okinawa could not be bypassed, a further invasion of Southern Japan could not take place without this logistical island. You need a good staging area and Okinawa and Iwo Jima are both necessary to that end.

Mainland China would not be good because Japan still had credible army units within reach, but had zero naval capabilities…so it was a safe choice to use the islands to stage invasion.

@General-5-stars
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@SuperbattleshipYamato

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