I suspect that the defeat of the Nazis was more to do with the offensive of the Red Army on the Eastern Front. For every 1 German soldier facing the western allies on D-Day there were 20 fighting the Red Army in the east.
The "Kaisers Offensive" in early 1918 came as quite a shock to Foch and the General Staff but it was a last gasp offensive before the American Armies built up sufficient strength to be decisive. The Sedan offensive of 1917 where the German Army had been bled white while being held by the French Army with their order "They shall not pass" was heroic on a grand scale as is proven by the vast French military cemeteries and ossuaries in the Sedan area. The Sedan Offensive of 1917 was called "The Stalingrad of the First World War" so there was never any danger of the French Nation having to speak German.
Last edited by DC10RealMan; 18th Jun 2020 at 20:07.