Waterloo Sunset — Judith Saxton

Sixteen-year-old Barbara Campion is determined not to forced into an arranged marriage before her childhood sweetheart has had a chance to propose, so she disguises herself as a stableboy and goes searching for Harry's regiment...in Belgium! Harry isn't as thrilled as she'd hoped when he sees her and on the eve of Waterloo, Barbara goes to a ball. But the man in whose arms she waltzes is not the idol of her youth, and before she can catch her breath, the regiment is on its way to battle...