Something I was thinking- should Germany be Prussia instead?
Reasoning: Prussia as an independent country lasted from I think 1701 (earlier if you count Brandenburg) until 1870, and then ran Germany pretty much until 1945.
Downside:Leaders might have to change, you'd probably have to dump Hitler.
[Cursivation by me] You're forgetting the 1918 revolution which turned the Empire - the 2nd Reich - into a democracy, while Hitler's regime reduced Prussian aristocracy to the upper echelons of the Wehrmacht.