sentences:  On 21 January 1779, Cooke was promoted to lieutenant and joined in the East Indies under Sir Edward Hughes, but was forced to take a leave of absence due to ill-health.Cooke returned to England and then went to France to spend a year studying, before rejoining the navy in 1782 with an appointment to the 90-gun under Captain Alan Gardner.Cooke saw action at the Battle of the Saintes, at which "Duke" was heavily engaged.