WWI Question: Italy vs. US (so to speak)

I was just thinking today about what would happen to Italy had it gone in on the side of the Central Powers, but the United States still entered as an ally.

My assumption is that we still see an entente victory, but what is the nature of this victory, what are the peace terms on the Central Powers, and does Italy entering really affect the outcome even if the US is there too?

I can see France struggling to remain vigilent in this war with two fronts (given that France is the only place Italy can really invade in a hurry), but when it comes down to it can the allies still dictate the treaty terms or will there need to be compromise? Would Italy be stripped of colonies?

The post-war treaties are what I'm most curious about (for the sake of mapmaking).
 
Depends on when Italy joins. If it's right from the start then American entry is likely going to be irrelevant. France nearly lost just from having to deal with the Germans, if the Italians are also invading them the French are going to be too overstretched to handle it and then you can expect French surrender. After that The British and Americans might decide to back out since aside from blockading Germany they can't do anything and if the French are out then both would probably consider the war a lost cause anyway. Now if this happens then the Germans, Austrians, and Italians are able to throw their entire forces at the Russians who at this point are also doomed.

However the guarantee of the Americans entering the war from the start is also going to have drastic effects on the entire prewar situation since having to deal with such a large industry might cause the Central powers to back off from war or push them to knock the French out as fast as possible for the above reasons.

So to be honest I doubt the Entente can win the war if Italy joins so a Entente victory is going to be hard to pull off. However if (and it's a pretty big if) the CP aren't able to get the French out then it's literally a guarantee of a Entente victory since the US being on their side is going to create a major manpower (and pretty much everything else) disparity between the two power blocks.
As for the post war it depends on when it ends and so many other factors that I really can't remember the countless different ways Europe will look afterward.
But as for Italy I don't know anything about what the Entente would have taken from them if they sided with the Central Powers aside from it's colonies.
 
The only plausible time I can think of is late 1915 - along with Bulgaria. A change of the outcome is likely.

Italian colonies become mandates like the Ottoman Empire's land. Some adjustments of the Alps but I don't know too much of human geography of that area.
 

Eurofed

Banned
In the case of an Entente victory, you would likely see the same border adjustments on the Franco-Italian border in favor of France that were done in 1947 OTL, i.e. Briga and Tenda to France. At the very most France could also annex Aosta but it is less likely, if they are doing that, then they would also annex Saar. It is unlikely that France would be able to inflict a more harsh peace than they were able so in OTL 1919/1947. I agree about Italian colonies becoming Anglo-French mandates.

However, I must seriously question the assumption that the USA entry, if we keep the same OTL dates for Italy and America (1915 and 1917 respectively) would still lead to an Entente victory. While making America join late is still quite feasible (just make Germany still go on with USW despite US unhappy rumors and the greater likelihood and expectations of winning on land faster, it is not the most likely expectation but it is plausible), making America joining in 1914-15 is much more difficult, it would require a US involvement in the pre-war European alliance system, and this implies radical changes to the TL elsewhere. A CP Italy entry, moreover, is only really plausible to happen either in late Summer 1914 or in Spring 1915, as the result of Germany successfully strongarming Austria to cede Trento and Gorizia-Gradisca and giving generous guarantees to Italy about territorial gains from France at the peace table.

With this schedule, America would join when Russia has already collapsed and France would be on its last legs. With a CP Italy, the schedule of Russian collapse and France bleeding white shall be substantially accelerated, by 6-12 months at the least. Even OTL, it took about an year for America to train and send substantial amount of troops and Germany almost broke the Anglo-French with the Spring 1918 offensives in the meanwhile. It is to be expected that when Russia collapses, and the concentration of Austro-German-Italian manpower is done on the Western front, the Anglo-French are overwhelmed well before the Americans may reach the front in any substantial numbers.

If France and Russia go down, Britain and America would surely deem the Entente a lost cause and accept a white peace. With the total defeat of France and Russia, the Anglo-American chances of pulling a successful conventional invasion of the continent would be very very dim even in WWII, only more so with WWI technology and no air power to support the landing.
 
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