Like what happened in Warsaw 1944-5.
POD is Invasion of France.
Sorry I don't understand...
Do you mean, a major uprising in Paris before Normady landing?
Well... that is madness. The citizen will be massacred, the city blown up block by block.
The prime mover of Warsaw Uprising is the Red Army already days away from the city (only to redirect their advance route and let the Nazi bloodily quell the uprising)
Walter Model: While commanding Army Group Centre, he refused to dispatch troops to put down the Warsaw uprising (a task that ultimately was carried out by the SS), viewing it as a rear-area matter. He stated that the revolt arose from the mistreatment of the Polish population by the Nazis, and the army should have nothing to do with it.
On the other hand, he showed no hesitation in clearing the Warsaw suburbs of Praga and Saska Kępa, through which vital supply lines ran.
https://en.wikipedia.org/wiki/Walter_Model
Well, we all know all the Vercors uprising ended.
https://en.wikipedia.org/wiki/Maquis_du_Vercors
And that was a mostly unhabited area.
To overcome the centre of resistance around Vassieux-en-Vercors, Luftlandgeschwader 1 landed two companies of Russian/Ukrainian troops of Fallschirm-Battalion "Jungwirth" of the Brandenburg Lehr Battalion by DFS 230 and Gotha Go 242 gliders on July 23.
https://en.m.wikipedia.org/wiki/Maquis_du_Vercors
This new book is only the second book in English to deal exclusively with the “Oradour Massacre” when 642 inhabitants of Oradour-sur-Glane were rounded up and murdered by a division of the Waffen-SS. The entire population was assembled in the village square. At about three o’clock the women and children were separated from the men.
The Germans accused the menfolk of storing arms and ammunition in the village. The men were then taken away in groups of between 30 and 70, and shoved into the six largest buildings in the village, including barns, garages, blacksmiths, etc. Of the 190 men thus incarcerated, only six got out alive. All the others were machine-gunned and then the buildings were set on fire. The women and children were locked up in the church. Two German soldiers carried in a box of gas grenades and then ran out.
The grenades exploded, and the smoke enveloped the entire church. During the ensuing mayhem, German soldiers burst in through the doors again and sprayed machine-gun fire into the crowds of people. When all appeared to be dead, they set fire to the church. The entire village was then burned, until very little remained except the charred ruins which stand there today.
The massacre was carried out by a detachment of the third company of the 1st Battalion of the No. 4 Panzergrenadier Regiment (“Der Führer”) of the Das Reich Division of the Waffen-SS. Most of the detachment which sacked Oradour were themselves Frenchmen, from Alsace and Lorraine.
When Rommel was told of the Oradour massacre he said that the Division should be punished, and offered to preside over a court-martial.
http://vho.org/GB/Journals/JHR/1/3/Brandon276.html
Like what happened in Warsaw 1944-5.
POD is Invasion of France.
For a moment alter the idea of what a "Paris Uprising" constitutes. Try this for a moment.
1. Jedburgh teams are sent in a week before Op Neptune is executed. OTL they were not sent until latter july & August.
2. The French underground in and outside Paris starts a maximum effort against the German transportation system the same night Op Neptune starts. OTL the Brits/US were somewhat restrained and selective as to the activity they wanted from the French resistance.
Aside from getting a lot more French killed that summer, what are the possible effects of this? Among other things could it appreciablly hinder German reinforcements and supply to the Normandy battle?
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First off you have to answer the question who is in charge of France militarily and politically? General Stülpnagel the military governor of France. Tortured and hung for his involvement in the July Plot. Von Rundstedt a bit of an arrogant old Prussian and Rommel obviously, but what did these men have in common? They all saw the war as effectively over with the only question being what terms they could get if any from the WAllies.
France was effectively at that point in time a bargaining chip and the only one they believed Germany had to get some conditions. They know France would have a big say in the post war treatment of Germany and what German troops did in regard to the French population could and would have a huge say as to things like if there even would be a Germany after the war something Rommel was very uncertain of.
When it came to the Warsaw Uprising. You had shall we say a more amoral hard assed German general in place Walter Model who made clear when ordered to put down the Warsaw uprising by Hitler that his treatment of the Poles caused the uprising and he wouldn't have his troops clean it up.
In taking that stance Germany including its regular army and its whole population still ended up with the blame and being punished for what the Waffen SS did in regard to the situation.
I thought about the response to something similar happening in Paris. If it happens pro-Normandy as talked about here you won't get the same response from the German generals in France.
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They are going to be quite careful in how they tackle it to avoid pissing off the French more then they feel they have to and by extension the WAllies so no I don't see the city being leveled. Its not going to be pretty at all, but not as ugly as you believe IMHO.