Mike, your analysis is a good one, and I may come back to it, but it struck me that a long war was not the only possibility. Depending on what ideas everyone has, I may come back to that. I hope to write a TL based on something like this over the summer.
The problem with a short war requires either crushing military defeat for one side or both sides willing to talk.
While the Germans pig headed stance on war aims is the most famous the entente was not much of an improvement. Once the war goes past the first winter forget it, you stuck with the long war in my opinion.
If you don't want German domination in a short war here is a thought. Have A-H fight with some measure of intelligence to start the war. Have Conrad never restored as chief of staff or something following the Bosnian Annexation Crises. AH doesn’t launch their ham fisted double offensive, doesn’t screw up mobilization and put most of their forces vs. Serbia hoping the Russian mobilization numbers their spy’s have given them are fantasy. Maybe even a little intelligence on Vienna’s part and they sign up Sofia for the act. Serbia fights valiantly but is defeated facing a two front war.
The S plan doesn’t work as historic and stalemate follows on the Western Front; perhaps have the Germans fall back a little more than historic. In the east the Russians get killed in East Prussia and have a harder time of it over historic vs. Austria while driving them back no bruising victories either.
In October and November Austria-Hungary and Germany launch their fall attacks vs. Russia. With A-H have far higher levels of manpower compared to historic they are able to have some real success; especially if their commander is willing to coordinate at all (if you haven’t noticed already I think Conrad von Hötzendorf was a massive waste of space). At any rate the Russians don’t hold as much of Austrian Galicia; figure Przemyśl is saved.
That winter the war slows down as historic. Now Vienna has achieved their war aims, honor has been satisfied and they look for the door. Perhaps they have gotten some more details on the black hands involvement with the assassination making Serbia look even worse. With their armies in a much strong position Austria is able to nudge Berlin into at least an attempt at peace. One of the many sources offering mediation is accepted, the Pope, Sweden, USA, Spain, take your pick.
Winter 1915 is before both sides positions had become completely unreasonable; only just mostly.
A peace deal is struck that is largely status quo ante with some shuffling of colonial holdings. Perhaps the Congo is divided up as the price of a free Belgium. The lone exception is Serbia. They loose large amounts of territory to Bulgaria and are disarmed as menace to the General peace but the rumps independence is assured. Russia has another spat of internal disorder following what is viewed as defeat.
Berlin and Vienna claim victory, but its only bought as by the public in AH. The Germans have just spent a great deal of blood and treasure without much to show for it. The will be changes to follow. Austria-Hungary has new life as its place as a great power has been confirmed even thought cost a great deal of blood and money.
France the peace could play out a number of ways it would depend how it is received but I suspect similar to Russia and Germany. The chance at reversing the verdict of Sedan has not been achieved or has it? Germany still has A-L but Frenchmen can point to their victor at the Marne but what did that victory get them. The UK has secured Belgium’s independence but the shock of the virtual destruction of BEF is going to leave a bad taste in peoples mouths.
Italy and the Ottoman Empire will reevaluate their diplomatic stances.
Michael