There's really no reason for an Italy-first strategy. This was the Italian Army that had been routed by natives a few years earlier, more or less the joke of Europe. France and the BEF (and even Russia, at least at first) are orders of magnitude greater threats than Italy.
For argument's sake though, I think an Italy-first strategy would've resulted in a combined German-Austro-Hungarian sweep down through the Alps to Rome or until the Italians threw in the towel. As far as territorial changes, not sure, likely territory to AH and Italian East Africa to Germany.
The main problem here IMHO is that an Italy first strategy wouldn't help the Central Powers to achieve their war goals. Even if Italy was defeated and offered an armistice, the western powers would fight on. If France or Britain were defeated and forced to an armistice, however, the war will end.
A good argument. But as I mentioned before I think control over the Italian industry and Italy's agricultural production would improve the economic position of the CP. More equipment for the army, more food, also for the civilian population.
There's also the question what happens to the Regia Marina? It's ships are part of the Otranto Barrage.
I think a defeated Italy opens some interesting possibilities for the CP.
There's really no reason for an Italy-first strategy. This was the Italian Army that had been routed by natives a few years earlier, more or less the joke of Europe. France and the BEF (and even Russia, at least at first) are orders of magnitude greater threats than Italy.
For argument's sake though, I think an Italy-first strategy would've resulted in a combined German-Austro-Hungarian sweep down through the Alps to Rome or until the Italians threw in the towel. As far as territorial changes, not sure, likely territory to AH and Italian East Africa to Germany.
lukedalton said:take Rome is almost ASB
World War 1 showed almost throughout it's entirety that it often didn't matter where you concentrated your forces or how many lives you were willing to sacrifice - the odds were so heavily stacked in favour of the defender that concentrating on an industrialised nation with a large mountain range lining it's border and another mountain range running down the middle of it - making defence of that country at that time so much easier than attacking it, it would have been madness for the CPs, even if Italy is the 'weak link'.
All that probably would have happened is we'd have another famous WW1 battle to go aloneside the Somme and Verdun.
I think there is no option to go after Italy earlier than 1917/18. Beforehands, the much more massive threat of Russia stands in the way of redeploying enough forces to a front which held quite well against Isonzo-Offensive 1,2,3...
Also, I absolutely agree that pushing Italy out of the war is no essential war winner. Only making France asking for an armistice can do that.
Thus, the only plausible path towards such an offensive (not to Rome, which is ASB, probably not even to Milan) is to have a decision to shelve the Great Western Offensives of 1918 in favour of a defensive posture and instead trying to make an impression by pushing a manageable enemy over the brink of defeat.
I.e. we need a CP-strategy which tries to get out of the war by proving it is still going strong instead of trying to win total victory.
At this point of time, having Italy out of the war say in summer of 1918 would only create benefit if it would be a puzzle-peace of a political strategy to find compromise-peaces with the Western Powers.
If Italy is only offered dictated conditions, there is the danger of remaining in the war whatever the cost, until the USA fix the situation for good. Thus, Germany and Austria can only push for very little...acknowledging the 1914-border plus the occupation of Venetia for the rest of the war, giving the Austrians a short and river/lake/mountain-based defensive line.
For the time being, it would mean a lot of relief for the battered Austro-Hungarians. It could allow the monarchy to stay in the war with little more than a token effort for the time being, i.e. occupation duty in Venetia, Serbia and the East, but also still stabilizing the Balkan Front. Austria still had 32 divisions on this front in late 1918, some of these could have been redeployed, some demobilized.
So even if no agreement is reached in 1918, pushing Italy out of the war could carry both Germany as well as Austria-Hungary into 1919.
Whereas you're right that the odds were heavily stacked in favour of the defender, OTL WWI in Italy showed that the CP could have broken through thus possibly ending trench warfare in between the mountain ranges you cite and thus occupying the majority of Italian industrial capacity, which in turn could lead to Italy asking for an armistice.
Overall, hence, I think it would have been possible for the CP to take out Italy if they concentrated their effort there. But I doubt that this would have changed very much.
But doesn't this require an unusual amount of prescience on the CPs part? They have to figure out that offensive warfare is generally useless--so its OK to stand on the defensive East and West--but that attacking Italy will be an exception.
Finally Italy was committed to the war, and the commitment did not waver even after Caporetto (when in December 1917 the Germans offered to Italy - through Swiss channels - an armistice based on the status-quo-ante the government refused to give it any consideration).
I would confidently say that the idea of an Austro-German occupation of Northern Italy (much less getting to Rome, as someone has suggested ) is clearly ASBish
How could Italy be the first priority for the CP when it was nominally an ally of Germany and AH until after the outbreak of WW1 and didn't enter until 1915? CP mobilization plans involved France and Russia. You'd have to create a sufficiently early PoD that Italy was formally an Entente power well before 1914.
Also, wouldn't terrain be a problem? Given Allied experience in the 1940's, a CP offensive down the Italian peninsula might be much slower and take far more men than might be expected based only on the size of the Italian army.
Also, assuming the CP did knock Italy out of the war, so what? The effort to do this would draw reqources away from France and Russia, where the real enemies that mattered were.