No one wants to see a repeat of the first winter of the Korean war, especially any children of my father.

However, it's already March and the IHA is some 3000 miles from BGV, so it could be June by the time they meet, or at least May so winter may be the least of the hazards they face.
May may more mud, which would trouble the IHA assault divisions trying to cross the no man's land, NTM the IHA artillery, what there is of it trying to set up while well in range of ICA mortars and artillery, since theirs out-range the Go4's, a double++ ungood situation.
I strongly doubt the IHA will remain whole, when armies must be sent south to replace the AoS, reinforce Kaitswyrth, besides Wyrshym if he's still there since Symkyn has far more rifles NTM a great deal more artillery and mortars plus more cavalry or at least more in better condition; if almost 8,000 horses were captured, how many more were killed?
Even if split into 4 similar sized armies of 400K each, they each would require over 2200 tons of supplies per day [600 tons for the men, 1500 tons for 100,000 horses etc], quite a bit away from canals.
I mentioned previously how I think Symkyns will destroy Kaitswyrth fairly quickly [he needs to win his battle honors too] before anyone can reinforce him since even overland the IHA would take over a month to get to Aivahstyn, time enough for Earl High Mount [EHM?] to reach the Daivyn, NTM some ironclads while some scout snipers were cutting the Fairmyn river supply line.
Again as I've projected, the opportunity for the ironclads to destroy the majority of the IHA's 'army group center' while it's stuck in barges on the Daivyn seems practically unique.
After the IHA's 'AGC' is destroyed Symkyn could then go north to help BGV deal with his IHA [army group north?] by cutting the Langhorne canal when its too far away to stop him.
By then BGV might be close enough to Spinefish Bay that a ten day trip by ship could get him to Port Home, or even all the way up the Zion river, with all sorts of very interesting results.

Would his arrival trigger Duchairn's coup?

Meanwhile Silkiah and Dohlar await; Ahlverez gets away while DE avoids the RDA's fortifications to cut the canals supplying them and forcing them to retreat without suffering heavy casualties.
By the time EHM gets back into the theater from the Daivyn, any IHA army trying to move along the coast of the Bay of Bess may be discovering their supplies are not what they're supposed to be, thanks to raiding ICN schooners.

Meanwhile from a combination of thrusts from the Bay of Jahras etc, the Silkiah canal is taken with the locks effectively intact so the ironclads can pass through, besides cutting Sharpfield's fleet in the Gulf of Dohlar supply time from Tellesburg at least in half.
DE might be heading for Dairnyth ahead of the IHA rather than invading Dohlar directly, which might give Dohlar time to think about making peace before it gets hammered by the republic.
From the June 9th RFC interview at BayCon, it does appear a cold war will develop for about 20 years that will be covered in the next two books, before the next conflict which will be 3-4 books, at least that's what RFC thinks it will take now.
We shall see, and snippet hunger is increasing to dangerous levels...

L
[quote="Thucydides"]Advancing in winter in mountainous terrain against a million man army...
Anyone thinking "Chosin Reservoir" or "Changjin Lake Campaign"?[/quote]