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What would it take for a Nazi regime headed by a cult of personality like Hitler taking power in France in the 1930s?

Loss and humiliation in WW1? Then in the 1920s you get very patriotic political parties springing up all over France running on a platform of having been stabbed in the back during the war, blaming the Jews for France's loss in World War 1 and going another round with Germany. French antisemitism of the rabid kind wouldn't be farfetched. Just look back to the Dreyfus case.
An obscure French army officer from world war 1, with a gift of eloquence and charisma comes out of the woodwork fashioning himself after Napoleon.

He comes to power and puts the economy on a war footing, building up the military. The French army changes its outdated doctrine and its officers realize that speed and mobility is key to striking hard at Germany in what the French high command calls "guerre d'éclair" (flash war).

Someone give me ideas to develop this timeline.
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