From 1890 to 1907 he also published twelve volumes of his History of the Art of War: Alexander, Hannibal, Caesar, Gustavus Adolphus, Frederick the Great, Napoleon, although the volumes on Frederick the Great were not completed before his death.
Între 1890 și 1907 a publicat 12 volume din a sa lucrare History of the Art of War: Alexander, Hannibal, Caesar, Gustavus Adolphus, Frederick the Great, Napoleon, deși volumele despre Frederic cel Mare nu au fost completate înainte de moartea sa.