Mission to the Ionian Sea - Patrick O'Brian - book

Bold, seafaring hearts. Jack Aubrey, Royal Navy commander, and Stephen Maturin, Her Majesty's doctor and spy, have returned to their beloved vessel, the drum of alarm, and the smell of gunpowder. While the French fleet puts up increasingly fierce resistance to the blockades imposed by the English, their frigate sails towards Greece and its islands, where a new mission awaits them: to conclude an alliance that would allow the Navy to drive the French from the Mediterranean and deal a fatal blow to Napoleon. Will Aubrey succeed in changing the course of history?