The Reverse of the Medal is the eleventh historical novel in the Aubrey-Maturin series by Patrick O'Brian, first published in 1986. The story is set during the Napoleonic Wars and the War of 1812. Returning from the far side of the world, Aubrey meets his unknown son, and proceeds home to England, where he is embroiled in the most difficult challenge of his career, and all on dry land. Maturin is his close and valuable friend at every hard reverse.