Editing Philippe II, Duke of Orléans (section)

==Military career==
His father gained military distinction in the [[Battle of Cassel (1677)|Battle of Cassel]] and during the decisive French victory against [[William III of England|William of Orange]], Chartres would similarly demonstrate military prowess. He had his first experience of battle at the siege of [[Mons, Belgium|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 he also served at the [[Siege of Namur (1692)|Siege of Namur]]. The following year he served at the [[Battle of Landen]]; he fought alongside the ''prince de Conti'', who was wounded.

During a hiatus between military assignments, Chartres studied [[natural science]].

In the next century, he would serve in the [[War of the Spanish Succession]]. He was next given a command in Italy (1706) and gained much credit for the [[Battle of Turin]]. Later he went to Spain and took part in the [[Battle of Almansa]], a major step in the consolidation of Spain under the Bourbons (1707), where he achieved some important successes.