Would a Japanese Invasion of the USSR during Barbarossa have actually helped?

Yes.

And if only because it keeps the USA our of the war.

Japan would not wage war against the USSR and the USA (and China, the UK and France) at once.

So Germany does not declare war on the USA and Roosevelt will not manage to simply enter the war just because ...
 

raharris1973

Gone Fishin'
- Soviets can't send vital/nessecary troops west. Moscow and Leningrad both fall at the end of 1942.

I can't buy that troops shortages would be the reason for Leningrad and Moscow to go down. Stalin would always, always, always prioritize European Russia first even if it means sacrificing more territory in Asia. The European territory is simply far more valuable. And remember this is what the Bolsheviks did in the Russian Civil War - a their low point they lost all of Asia while protecting their European core.

I'm not saying Russia, or the cities of Moscow or Leningrad cannot fall in mid-to-late 1942. But it definitely would not happen because Stalin can't or won't concentrate troops in the wrong place. If those cities fall, it would be because he cannot supply those troops or their tanks and aircraft or artillery park with food, fuel, ammunition or supporting transport capacity like trucks and locomotives.
 
come to think of it I don't think a Japanese attack would stop the USSR from deploying its siberian divisions to the west. why bother defending the far east when the industries and population centers in the west are under siege? If the japanese launch an attack Stalin could just evacuate the entire region and let them have it. There's not much use in defending the ports since the japanese could just blockade them. correct me if I'm wrong but I don't think the far east oil fields were developed until much later.
 
Japan could do an Summer 42 attack forgoing coral sea and midway, doing it after burma occupied. They would have secured what they wanted in the Pacific already, and would be cutting lend lease through this route before it really kicked in. Helps Germany on the east front, mainly in delaying Soviet offensives in late 43. The allies have a bunch of shipping not transferred to the soviet flag as in otl for service on this route and a bunch of extra supplies. The biggest change possibly is if this baits the allies into invading france in 42 or 43 to help the Soviets.
 
Hm, could the inability to move troops west cause problems elsewhere? I'm thinking the Germans and Finns might be able to cut the Murmansk railroad, slightly degrading the Northern route as well.
 
The Japanese had a large force/population of White Russians and their descendants living in Manchuria and serving in the army.

Itd be neat if they tried to set up a White Russian government in Siberia. Perhaps liberate the Gulags for manpower and try to instigate a revolt.
 
Yes.

And if only because it keeps the USA our of the war.

Japan would not wage war against the USSR and the USA (and China, the UK and France) at once.

So Germany does not declare war on the USA and Roosevelt will not manage to simply enter the war just because ...

I was thinking about the US, how does that go?

They're are already putting an embargo and international pressure on Japan over China, and Roosevelt's decided he wants to help the USSR pretty much as soon as Hitler attacks in June. But can he sell a quick escalation with Japan to the American people if a Japanese invasion stops or impedes LL to the USSR?

Pearl Harbour ends the question emphatically, but this isn't that,
 
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The Japanese take everything south of the Amur, but are bogged down. If this in in addition to Pearl Harbor, the Philippines and DEI hold out for an extra month or two. The Battle of the Coral Sea is the massive naval disaster for Japan, not Midway. The Japanese might not even take Java or Sumatra. The Chinese do better since a couple divisions are moved to Russia. The Germans most likely take Moscow, but it is retaken during the Winter Offensive. The Battle of Stalingrad might last longer, and the Germans might reach the Caspian Sea. The Iran Supply Route would keep Soviet troops in Transcaucasia stocked up, preventing the Nazis from crossing the Caucasus Mountains. The Soviets still drive them back. The Battle of Kursk would drag out a little longer. The Soviet Progress in Europe would be a year behind OTL.

With more troops to spare, the Allies land in France a couple months earlier as well. There is a Balkan Campaign along with the Italian Campaig, with Yugoslavia cleared of enemy resistance in mid 1944. The Allies move into a collapsing Germany, with the Germans surrendering en masse to the WAllies, but fighting tooth and nail against the Red Army. The WAllies and Soviets link up Along the Bug River.

After the War in Europe ends, the WAllies have executed Operation Downfall, with the Soviets storming Amuria, Manchuria, and Korea. Japan gives up once Tokyo falls


tl;dr: Japan does worse and the Germans do better.
Why would Operation Downfall happen? Manhattan project still exists
 
Would the Soviet commander that won Stalingrad be sent east or to another location? Would Germany make the same mistakes as done otl in Stalingrad? The loss of the 6th army makes a significant difference.
 
Would the Soviet commander that won Stalingrad be sent east or to another location? Would Germany make the same mistakes as done otl in Stalingrad? The loss of the 6th army makes a significant difference.

Zhukov would be kept in front of Moscow at all times in this scenario and will be killed if he fails to hold the city. He won't be leading any atl Uranus.

Chuikov might still be put in charge of the defense of Stalingrad itself but I can't see the city Surviving a German attack if the Soviets are facing even more strain than otl.
 
The Dolittle air raid was just a token act of defiance against Japan, major raids against the home island did not occur until mid 1944. But if the Soviets were in the war raids could fly out of Vladivostok resupplying would be hard but out of Petropavlovsk on the Kamchatka peninsular would be easier with US military assistance.
 
It would not do mouch, at least not once the route over Persia worked for Land-Lease to Russia. Spain lacked the tanks and anti-tank weapons to oppose what the Russiand had in 1939, let alone later models. Russia also never pulled troops from the Far East to save Moscow, just western Siberia/ Central Asia and once the Germans are defeated like OTL, these forces turn east and crush what is left of the Japanese Army if the Russian Far East Army did not manage to do so by then on it's own.
 
It would not do mouch, at least not once the route over Persia worked for Land-Lease to Russia. Spain lacked the tanks and anti-tank weapons to oppose what the Russiand had in 1939, let alone later models. Russia also never pulled troops from the Far East to save Moscow, just western Siberia/ Central Asia and once the Germans are defeated like OTL, these forces turn east and crush what is left of the Japanese Army if the Russian Far East Army did not manage to do so by then on it's own.
And if Japan invades, those formations are heading to Vladivostok, not Moscow. In addition, the Persian Corridor was not operational until mid-1942.
 
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marktaha

Banned
Hitler Has Won by Frederic Mullally featured a scenario with Japan attacking Russia rather than Pearl Harbour.
 
How does that help anyone?
It secured the northern convoy route to keep supplying Russia for the Americans again thanks to US airdominance by quality and numbers, whiel also putting main Japanese islands in bomber range quit fatser then the southern route.
 
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