“ His success at Vienna opened the way to a larger career, when in 1758 he supplanted Antoine Louis Rouillé (1689–1761) as minister for foreign affairs and so had the direction of French foreign policy during the Seven Years’ War. At this time he was made a peer of France and created duc de Choiseul. Although from 1761 until 1766 his cousin César, duc de Choiseul-Praslin (1712–1785) , was minister for foreign affairs, yet Choiseul continued to control the policy of France until 1770, and during this period held most of the other important offices of state. ”

“ He attained the rank of lieutenant-general, and in 1750 married Louise Honorine, daughter of Louis François Crozat, marquis du Châtel (d. 1750) , who brought her husband a large fortune and proved a most devoted wife. ”