Battle of Nördlingen
Geleen and his troops joined Mercy at Aschaffenburg and followed him into Swabia. There Geleen commanded the right wing at the disastrous battle of Allerheim (Second Battle of Nördlingen). Mercy was killed and Geleen was captured, but after a short captivity Geleen was exchanged for the French General Gramont and then took command of the Bavarian army.