German army storms through France toward Paris during World War II

The transcript describes Adolf Hitler's swift military campaign, which quickly overpowered resistance with his armored and infantry divisions. The Allied forces' defense crumbled, leading to a significant retreat and evacuation at Dunkirk, marking a turning point in the campaign.

What does the term 'humbling retreat' refer to in the context of the campaign?

In what ways did the campaign turn around after the events at Dunkirk?