1619 saw d'Albert appointed to be Governor of Picardy, Knight of the Order of the Holy Spirit, and Marshal of France.

He came to London as ambassador in 1620 and King James gave him and his entourage gifts of jewels made by George Heriot.

He commanded, with the Marshal de La Force, the army of Picardy, keeping it under royal control, and was made its Governor in 1635.

He commanded the same army in 1635 during the Franco-Spanish War, entering Artois, where he razed multiple castles and passed through Grévillers, looting what provisions he could take and burning the rest to deprive the enemy.

To retaliate for the damage done by the Spanish to Picardy during the last campaign, the Duke assembled 1200 men in January 1636, entered Artois and burned numerous villages, in addition to defeating 400 Irish mercenaries.