Jeanne D’Arc – the teenage girl guided by saintly voices to command actual French armies into actual military victories – is one of history’s best-known names. Not bad for a 13-year-old.

But that's not all. This week, we take a speedy look through the bloody, Game-of-Thrones-topping madness that is the Hundred Years’ War, meet a mad king that’s convinced he’s made of glass, and find out how one girl changed the entire course of world history.