Germans don't break through at Sedan in 1940

What would have happened?

Depends on whether they can stop the forces moving through Belgium somewhere short of Marseille...

Assuming the defeat was that their failure to make it across the river - as I understand it all but one attempt failied IOTL - kills that part of the plan then presumably there will be a longish delay before the panzers show up somewhere useful. They will have to be fed back through the rather poor Ardenne road system they just tore up getting to Sedan and then there is the issue of where to?

Also how long, a week, a couple of weeks, months? Meanwhile the allies have to stop retreating and do enough damage to the force comming through the low countries that when Guderian and friends show up they can stop that too. Would the panzer force be sent in to a different part of the border - there is after all a reason they keep invading Belgium - or reinforce the earlier attack?

I don't have a detailed enough understanding of the real events, road network etc to know what the realistic chances of the French army staging its victory parade through Berlin on Christmas day...
 
A more mobile version of 1914 - 18 with campaigns in #Northern France and the Low Countries conducted by armoured forces. Maybe this stalemates after afew months as in 1914.
 

Cook

Banned
What would have happened?
If Guderian had been unable to force a crossing at Sedan the Germans are still over the Meuse less than ten miles further north at Montherme with the 6th and 8th Panzer divisions and also at Dinant with the 5th and 7th Panzer divisions. The 8th would have swung south and attacked the defences of Sedan from their flank, probably sometime on the 15th of May. This would result in a delay of a day for the two southern Panzer Corps while the 5th and 7th would have kept going; the Germans would probably have been delayed for a day in reaching the Abbeville. Given that Guderian was unnecessarily stopped twice (1st by Hitler, then by Rundstedt) it may in the course of his rush to the coast, it may not have even resulted in that long a delay.
 
If Guderian had been unable to force a crossing at Sedan the Germans are still over the Meuse less than ten miles further north at Montherme with the 6th and 8th Panzer divisions and also at Dinant with the 5th and 7th Panzer divisions. The 8th would have swung south and attacked the defences of Sedan from their flank, probably sometime on the 15th of May. This would result in a delay of a day for the two southern Panzer Corps while the 5th and 7th would have kept going; the Germans would probably have been delayed for a day in reaching the Abbeville. Given that Guderian was unnecessarily stopped twice (1st by Hitler, then by Rundstedt) it may in the course of his rush to the coast, it may not have even resulted in that long a delay.

Unless the French manage to get the forces they had been preparing for a counterattack in position. These included lots of armour, including the superior Char B1-Bis, and OTL, they gave the Germans quite a bloody nose at Stonne.
 
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