My Adventures During the Late War is a personal memoir of British Royal Navy officer Donat Henchy O'Brien. O'Brien served as a midshipman during the French Revolutionary Wars and commanded a troop-carrying vessel during the Anglo-Russian invasion of Holland. While returning to England in 1804, the ship was wrecked on the Île de Sein and O'Brien and other members of the crew were captured by the French. O'Brien was imprisoned in France but escaped in 1808 and reached a British vessel at Trieste. O'Brien was afterwards promoted to lieutenant and served with the Mediterranean Fleet during the Napoleonic Wars. He distinguished himself in a number of boat actions, capturing numerous warships and cargo vessels.