Meg, an innkeeper's daughter, as tall as the tallest man in Westminister, puts on her father's clothes and joins the British army setting out to invade France led by the King himself.
Everything I like in a kid's book---great girl heroine, doing something unexpected, and a bit of history thrown in. Meg, so very tall, is a woman warrior in the Middle Ages. Like so many other women warrior, she had to keep her identity a secret.