Ancient warfare -- The diversity of the medieval ways of war, 200-1200 -- The emergence of a new combined-arms tactical synthesis, 1200-1600 -- The new tactical synthesis in transition, 1600-1700 -- The primacy of the line of bayentted muskets, 1700-1791 -- Tactical and strategic transformation in the era of the French Revolution and Napoleon, 1791-1815 -- Technological change and doctrinal stability, 1815-1914 -- The apogee of the defense : World War I, 1914-18 -- Prelude to renewed conflict, 1919-39 -- The climax of modern warfare : World War II, 1939-45 -- After the World Wars : consolidation and technological change, 1945-85 -- Continuity and change.