The Battle of Dettingen (German: Schlacht bei Dettingen) took place on 27 June 1743 at Dettingen on the River Main, Germany, during the War of the Austrian Succession. The British forces, in alliance with those of Hanover and Hesse, defeated a French army under the duc de Noailles. George II commanded his troops in the battle, and this marked the last time a British monarch personally led his troops on the field. The battle straddled the river about 18 miles east of Frankfurt, with guns on the Hessian bank but most of the combat on the flat Bavarian bank. The village of Dettingen is today the town of Karlstein am Main, in the extreme northwest of Bavaria.