I'm thinking of a creating a short Vignette concerning a snapshot of the implications of different Allies occupation zones in Germany after World War Two.
The British-Commonwealth in the northwest, the Americans in the south, the French in the southwest and the Soviets in the east would all stay the same. Those were political but also logistical reasons.
However, the difference would be Schleswig-Holstein being in the Soviet zone and Thüringen being either British or American or split between those two.
Hamburg would be in the British zone.
My question is when and where, and more importantly how, those OTL zones were drawn up in the first place pre occupation? Who made the decisions and on what basis of past the initial general geographic split between the different Allies of World War Two?
In addition, I guess too, is such a small change - but one with big future implications for the Cold War: Warsaw Pact on the North Sea, no Fulda Gap - really plausible?
Any ideas would be helpful.