"at the Battle of Dettingen"
The Battle of Dettingen took place on 27 June 1743, in Bavaria, during the War of the Austrian Succession. It was the last time that a British King personally led his troops into battle. The British forces, under King George II, in alliance with those of Hanover and Hesse, narrowly defeated the French army under the Duc du Noailles. The allied army supported the recognition of Maria-Theresa as Archduchess of Austria.
The two parties had agreed before the battle that the sick and wounded who fell into the hands of the enemy would be cared for and not considered prisoners of war. The agreement, a precursor of the Geneva Convention, was honoured by both sides.