...nto St. Christopher's. D'Estaing then sailed (August, 1779) to escort, part of the way, the homeward-bound French West Indiamen; and, returning, engaged jointly with the American army in the siege of Savannah , but abandoned the contest before a promised victory for the allies was won. He returned to France in 1780, and in 1783 he commanded the combined fleets of France and Spain, and was made a Spanish gr...