Ygthkb

Listening to the audiobook D-day through German eyes, I thought: what if Germany had surrendered before any Soviet force entered its territory?

In the book, a German soldier says that his motivation after 1943 was to protect his motherland from communist enslavement. Hence, I thought that maybe, from this standpoint, it would have been better to concentrate resistance on the eastern border and let Western forces invade deeper.

Was there any predetermined arrangement, official or non-official, to divide its territory into sectors in the case of Western powers occupying the whole of the country before the Soviets managed to enter it?

Would the Soviet sector have covered less ground than it did in actual history? Or would it have been the same, and there was no benefit from letting Western forces advance deeper?

P.S. My question is not about whether there was any possibility of a conditional surrender, or of surrender to only some of the Allies. I'm curious whether it was possible to escape communist rule by re-distributing the resistance effort to the East.

The boundaries of the occupation zones had been settled at the Yalta Conference between Churchill, Roosevelt and Stalin. A basic plan for the zones had been made during 1944, by the European Advisory Commission, but it was modified at Yalta. The Yalta conference presumably announced that there would be occupation zones, but I doubt that their boundaries were published at the time.

In early July 1945, the troops of the various occupying powers moved to the agreed areas; before then, each part of Germany was occupied by whoever had got there first, and some US troops withdrew 200 miles to let the Soviets take over their assigned areas.

This agreement, and the compliance with it by the Allied forces, meant that letting the Western Allies advance further would not have made any difference. The areas that were agreed to be Soviet-controlled would have inevitably ended up that way, unless the Germans managed to repel the invasions.

The requirement of unconditional surrender was decided by the Western Allies in January 1943 in Casablanca. Even earlier all Allies promised not to conclude
a separate peace.

There was no arrangement and no accepted plan of what to do with Germany before the beginning of 1944.
In the early 1944, when it became clear that Germany will be defeated soon,
there was a discussion what to do with Germany when it is defeated.
Various plans were discussed by the Allies.
See, for example https://en.wikipedia.org/wiki/Morgenthau_Plan#Morgenthau's_memorandum.

According to Wikipedia,

The Morgenthau Plan was seized upon by the Nazi German government, and used as part of propaganda efforts in the final months of the war which aimed to convince Germans to fight on.

Q Was there a pre-determined arrangment for division of Germany in case it surrendered before any Soviet forces entered its territory?

Yes. The allied had many plans for that. But many were not as recognisable as the later boundaries that evolved into state borders. Example from Churchill's ideas at Yalta:

Q … so I thought that maybe, from this standpoint, it would have been better to concentrate resistance on the eastern border and let Western forces invade deeper.

That is exactly what many generals advocated for and what after Hitler's death the new "Flensburg Government" ordered its soldiers to do.

Dönitz's initial priority was to open communication with the commanders of German armies, and to establish with them their acknowledgement of his new authority as sole Supreme Commander of all German armed forces. He also sought their agreement with his overall policy of negotiating successive partial surrenders with the Western Allies, while maintaining the war against Soviet forces in the east.

Q Was there any predetermined arrangement, official or non-official, to divide its territory into sectors in the case of Western powers occupying the whole of the country before the Soviets managed to enter it?

The arrangements that came after February 1945 in Yalta and were drawn up in the minutiae of the European Advisory Commission, and then largely finalised in Potsdam mainly spoke of given the Soviets a share in zones. But these were in flux for quite a while.

Montgomery's 21st Army Group (later) advanced to the Rhine with operations Veritable and Grenade in February 1945. A meticulously planned Rhine crossing occurred on 24 March. While successful, it was two weeks after the Americans had unexpectedly (sans meticulous planning) captured the (railway) Ludendorff Bridge at Remagen and crossed the river on 7 March. Montgomery's river crossing was followed by the encirclement of German Army Group B in the Ruhr. Initially Montgomery's role was to guard the flank of the American advance. This was altered to forestall any chance of a Red Army advance into Denmark, and the 21st Army Group occupied Hamburg and Rostock and sealed off the Danish peninsula. On 4 May 1945, on Lüneburg Heath, Montgomery accepted the surrender of German forces in north-west Germany, Denmark and the Netherlands.

With small alterations the occupation zones had some slightly bigger, some slightly smaller changes, not only at Potsdam, even long after the German capitulation. Example:

On 13 November 1945 Barber and the Soviet major-general Nikolay Grigoryevich Lyashchenko (Russian: Николай Григорьевич Лященко) signed the Barber Lyashchenko Agreement ((in German), also Gadebusch Agreement) in Gadebusch, redeploying some municipalities along the northern border between the Soviet and British zone of Allied-occupied Germany. Thus some eastern suburbs of Ratzeburg, such as Ziethen in Lauenburg, Mechow, Bäk and Römnitz became part of the Duchy of Lauenburg District (British zone), while the Lauenburgian municipalities of Dechow, Groß and Klein Thurow (now component parts of Roggendorf) as well as Lassahn (now a component part of Zarrentin am Schaalsee) were ceded to the adjacent Mecklenburgian district (Soviet zone). The redeployment was accomplished on 26 November, the respective occupational forces had to withdraw until 28 November to their new zonal territory.

Q Would the Soviet sector have covered less ground than it did in actual history? Or it would have been the same, and there was no benefit from letting Western forces advance deeper?

Leaving out the hypotheticals: the fiercer resistance towards the Eastern forces did enable more Wehrmacht soldiers and civilians flee to presumably more favourable British and American forces and territory. This also was one factor that did enable the British to prevent Soviet boots on the ground from reaching the North Sea. Obviously a possibility the Western allies had in mind, whether because of imprecisions in agreements, angst to find a fait accompli or beginning mistrust in Soviet policies is irrelevant.

Nevertheless, concentrating all resistance towards the East would probably not change the fact that the Soviets would have gotten "their share". One reason being that when really more concrete and realistic plans for the division were drawn down, the Soviets had already crossed the border and made facts. These were the realities the Germans feared the most. Concerning any allie dplans for divisions, the most 'popularised' plan that the Germans were aware of was the Morgenthau Plan from 1944. It wasn't a very favourabe prospect for directing military resistance either.