WI: Germany didn't restart unrestricted submarine warfare? (alternatives to Kaiserreich)

[Michele]

Because there's no particular mystery about it.

I didn't mean "think about it" in the sense of analyzing new insights. I meant in the sense, "keep in mind already known things".

In Dec 1916 both the Russian Revolution and the French army mutinies were still in the future. There was no immediate sign of the Entente weakening. Add to this that next year the British Army will be more seasoned and battle-hardened, while the Russian one is getting better armed and equipped, and 1917 promised to be a rerun of 1916 - only worse - and Germany had made heavy weather even of getting through 1916.

Yes. So, the German decision makers might have decided not to go with unrestricted submarine warfare again, if only they had had the hindsight we have now.