Memoirs of a Cavalier (1720) is a work of historical fiction set during the Thirty Years' War and the English Civil Wars. The full title, which bore no date, was a Military Journal of the Wars in Germany, and the Wars in England. From the Years 1632 to 1648. Written threescore years ago, by an English gentleman, who server first in the army of Gustavus Adolphus, the Glorious King of Sweden, till his death, and after that in the Royal Army of King Charles the First, from the beginning of the Rebellion to the end of the War.