2016 Polish Army vs. 1939 German Army

Without checking on the status of the current Polish army [as I don't have time at the moment] I'm not certain but suspect it would be STOMP and a certain Georgian saying "pact to partition Poland, nothing to do with me."

Especially with the logisical link and the presumed presence of the downtime Polish forces as well to help make up the numbers I can't see it ending well for the Nazis. Especially since once the western allies realised what was happening it might make them take action as well. Although it would be somewhat disorientating for the uptime Poles as they will have to conquer much of their 'homeland' as I suspect many will come from areas than in 39 were parts of Germany.

That's what I meant about a certain Georgian's reaction. Presuming his subordinates actually give him accurate reports on what's happening in Poland I can't see him sticking his neck out, especially if the western powers pile in against Germany.

I don't know about this. If they have the 1939 borders as mentioned in the OP then they already have more non-Poles than they can really handle. If its the 2016 Polish state then they already have destroyed the bulk of the German forces attacking them simply by appearing.

1. Completely agreed.

2. Out of curiosity--do you think that Poland will still aim for the Oder-(Western) Neisse Line as its western border in this scenario? If so, then do you think that Poland will want to expel the millions of ethnic Germans who are living east of this line? If so, then what do you think Britain's and France's reaction to this is going to be?

Any thoughts on all of this?

Also, though, for the record, the Polish Army in this scenario can not only get additional supplies through this logistical link to 2016, but also additional troops.

  Good question.  To the up-time Poles who make up the bulk of the forces smashing the German army those are Polish territory and probably a lot of them have [in 2016] their homes there.  At the same time they would realise the problems of how a forced deportation of ~10M Germans would look to the 1939 world and the problem that they wouldn't know for sure what Stalin would do. 

  Also can they return home?  I would assume so from the OP about being able to get supplies and reinforcements there.  This would clearly imply this is a parallel world as otherwise their home wouldn't exist if there was just one universe with its history changed.  How many would want to stay in 39 Poland rather than return home, especially since they might not know whether the link between the two would continue to exist once the crisis is over.

  As such I would say the logical thing would be to defeat the Germans, seek to deter the Soviets and probably take over Danzig and E Prussia so they have a secure coastline.  Which would still mean a lot of Germans being expelled but wouldn't be too extreme for the other down-timers and hence make Poland a pariah.  It would however mean Poland was vulnerable to possibly attacks by a more powerful and more heavily populated Germany but then that's going to be the case unless the up-timers stay permamently in large numbers.  Possibly also seek to boost Poland's security by workiung for the restoration of Czechoslovakia and disarming of Germany with possibly other border changes?  Very difficult problem and I'm not sure there is a right answer.

1. Wouldn't Stalin simply sit on his butt and not do anything in such a scenario, though?

2. Yes, they (as in, all of them) can certainly return home.

3. What about also taking over Eastern Pomerania and Polish-majority Upper Silesia, though?

4. What about if 1939 (or 1940, or 1941, et cetera) Poland will continue to have a connection to 2016 (or 2017, or 2018, et cetera) Poland, though? Indeed, in such a scenario, wouldn't it be utter suicide for Germany to invade Poland ever again?

5. Restoring Czechoslovakia would certainly help with this. However, the problem is that I would presume that a majority of the Sudeten Germans will prefer to live in Germany rather than in Czechoslovakia and thus might end up being perpetual fifth columnists if they will be put into Czechoslovakia. Of course, expelling 3 million Sudeten German certainly isn't going to be pretty either.

6. Germany already lost almost all of its non-German areas after the end of World War I in real life, though. Thus, without large-scale expulsions, Germany simply doesn't have many additional territories to lose after the end of World War II in this scenario.

7. Well, in addition to keeping its link to the present-day, Poland can insist that France annex the coal-rich Saar(land) and expel all of the ethnic Germans who are living there. Indeed, at least the Saar(land) only contains several hundreds of thousands rather than several million ethnic Germans.

  1)  I suspect that once Stalin gained some idea what's happening, at least that the Poles were 'owning' the German military in no uncertain terms he would get very cautious.  However how quickly this information filters up the Soviet system  - comrade Stalin, you backed the wrong side is not something his underlings are likely to tell him quickly.  Also while he might decide such its not going to be at least 17-9-39 before the Poles know that the Red Army isn't going to be storming across the borders.

2)  In that case while I would expect some tech transfers and possibly some visits while the link lasts I wouldn't think many up-timers would stay long once the Nazi threat was removed.

3)  Possibly areas which are Polish majority but as you say most of the areas with non-German populations were removed from Germany in 1919.  I was thinking of E Prussia and Danzig as it gives Poland a much more secure access to the sea and removes the problem of the Polish corridoor which isolated E Prussia from the rest of Germany, which is always likely to be a source of tension.

4)  Would either up-time or down-time Poles know for sure this was going to happen?  Also there is bound to be some technological drift to the 39 world and while the Poles would seek to limit that to down-time Poland as much as possible some information would leak out.  Thus, since they are parallel worlds, the 1939 Earth would gradually catch up in the 1016 one.  This wouldn't be a serious problem for the Poles for a couple of decades at least but even knowing certain things are possible would be a considerable boost to the technology, as well as the concern every other nation would have about being so far behind Poland.

5, 6 & 7 - there aren't any simple solutions here.  Even after the battering and land loss it took OTL German is still the dominant European power economically and demographically west of Russia.