Can somebody explain Joan of Arc to me? My text book just isn't clear. Easy ten points to best answer?

Thank you all.Can somebody explain Joan of Arc to me? My text book just isn't clear. Easy ten points to best answer?
She was a Catholic saint, said to have led France to many victorys, especially in the Hundred Year's War. She claimed divine guidance. Unfortunately Joan was captured and sold to the english, burned at the stake at the age of 19.