So we're waiting on further information about the naval situation and how the actual war plan voting will look like, but I have some thoughts on the land side of the conflict.
Here's etranger's report on land forces and
here's my post laying out how the mobilization numbers shake out past the first wave.
So we have 6,000,000 soldiers, divided into ten Army Commands of 600,000 each. For simplicity's sake, I will make suggestions based on this being the smallest unit we can independently deploy.
First the forces report tell us "We strongly suggest maintaining at least one army command's worth of troops (600,000) on the Franco-German border for security purposes," and I see no reason not to follow this. So that's one of our ten Army Commands committed.
Second I want to talk about Scandinavia. They can only presently deploy half a million soldiers, but this will soon build up to 1,800,000 after their second wave is done. If we let them build up to that in Jutland, we'd need to deploy substantial forces to hold them, the terrain on the border is poorly suited for defense and not far from the border is Hamburg, third city of the Republic. Even before that is the Kiel Canal, which will be our only link from the North Sea to the Baltic. So we'll either need to deploy an increasingly sizable army to hold the border, or commit a force immediately to secure Jutland and prevent it being a staging ground. I suggest we send in one Army Command for this, they'll have numbers and quality against the Scandinavians, and the poor terrain for defense cuts both ways. We should be able to secure it before serious reinforcements arrive.
Now we move to the main fronts. Austria will only have 1,900,000 at first, which puts them at a numerical disadvantage against the Italians and Spanish (2,400,000 combined) even before we are accounted for. Yet the Italian front is Alpine, which will be a slog to break through. But the Austrians will still need to deploy troops to hold it. Similarly they'll need to hold the substantial border we have with them. Even good defensive terrain needs soldiers. To ensure they have to cover it all, I believe we should deploy an Army Command to conduct probing attacks against Bohemia, forcing the Austrians to keep forces committed there, and exploiting any weaknesses if they exist.
This is a supporting measure to our main thrust, a campaign down the Danube to take Vienna. We've built up a riverine fleet here to facilitate this, and taking Vienna is important economically, strategically, and symbolically. It's one of the largest and most developed cities in the Habsburg empire, and the center of their rail network. Their war making ability will be notably hurt if it falls. Further, it will make it untenable for them to hold the Alpine front against Italy and Spain, freeing up millions of allied forces to fight on more favorable terrain in the rest of the Habsburg empire. Finally with the loss of their crown jewel, the Habsburgs will suffer a morale blow, which could embolden various resistance groups, who might also be assisting in our efforts against Vienna and Bohemia (though we should not rely upon them).
To this end I propose two Army Commands to be deployed down the Danube with our riverine fleet. Too many forces here along a fairly narrow front risks clogging our logistical capacity. 1,200,000 troops is still 63% of the deployable Austrian army, and with our superior quality, I'm confident we'll be able to punch through, unless the Austrians focus on stopping us to a degree which will let the Italians and Spanish break through, and potentially also our forces in Bohemia. This too would be a victory in my book, we don't want potentially up to 6 million Italian and Spanish forces stuck bleeding out in the Alps.
At last we get to Russia. My suggestion for troop deployment should be obvious by what's left, five Army Commands. 3 million troops is about half of what the Russians can muster at first, but we have some important advantages. Russian mobilization and organization is slow, so by moving swiftly we might catch them with their forces divided in Poland. In addition we will have the assistance of the Polish resistance, who can feed us information on enemy dispositions and movements, and even potentially sabotaging enemy rail lines. Thanks to this and our superior quality, we might hope to carry out a strategic defeat in detail, beating divided local Russian armies before they can gather together and receive further reinforcements. This will drive back the eastern front from our borders, and might encourage a Polish national rising, which will further augment and assist our forces.
I think an aggressive strategy like this is necessary due to the rising enemy numbers once our mobilization advantages fade away. Especially if we can't find a way to help the Italians and Spanish through the Alps, we'll be outnumbered by close to 2 to 1 by the League. Our superior quality will remain even as our mobilization advantage fades, but we have best advantage of it while holding the strategic initiative.
TL DR: Deploy units by Army Commands (600,000), 1 holds French border, 1 secures Jutland, 1 probes Bohemia, 2 conduct Danubian campaign, 5 cross into Poland to beat up Russian armies.