He first saw action at the defence of Montpellier during the Sixth War of Religion from 1576 to 1577. First he razed the citadel, guarded by royal soldiers. Then, when the situation became difficult, he made a sortie across the Cévennes to Bergerac to recruit reinforcements and fought his way back into the town.[6]
He distinguished himself at the Battle of Arques in September 1589, where his arrival at the head of 500 arquebusiers allowed the victory of Henry IV to be expanded upon.[8]
Personal life
On 18 May 1581, he married Marguerite d'Ailly (d. 1604), daughter of Charles d'Ailly Lord of Seigneville, and Françoise de Warty. Together, they had four children:
Henri de Coligny (d. 1601), Count of Coligny and Lord of Châtillon; who died in 1601 during the assault on Ostend.