inquiry about the siege of orleans?

Question

why did the British retreated after Joan made the monologue?

Answer 1

It was one of the very few points of the "Hundred Years War" in which the French won.

On the previous episodic conflicts, especially the previous generation with Henry V, the English almost bluffed their way to victory on some occasions.

The French were finally able to put up a fight, and the desire to continue holding France was waning in the English.