Battle of Landen
His father having gained military distinction in the Battle of Cassel and during the decisive French victory against William III of England, Chartres would similarly demonstrate military prowess. Chartres had his first experience of battle at the siege of Mons in 1691, the year before his marriage. He fought with great distinction at the Battle of Steenkerque on 3 August 1692. In the same year Chartres also served at the Siege of Namur. The following year Chartres served at the Battle of Landen; he fought alongside the "prince de Conti", who was wounded.