In the Franco-Dutch War (1672–1678) Lorges served mostly under Turenne in the French Rhine Army. However, in 1673 he was sent to Flanders with a detachment of 7000 men from Turenne's army to take part in the Siege of Maastricht. He was assigned the north-eastern sector before Wijck, the part of Maastricht that lies on the right bank of the Maas river. The town, which was under the command of Jacques de Fariaux, surrendered on 30 June 1673.