Greek and Roman warfare was unlike that of any other culture before or since. The key difference is often held to be that the Greeks and Romans practiced a "Western Way of War," in which the aim is an open, decisive battle-won by courage instilled, in part, by discipline.
Chapter 1. ‘At my signal unleash hell’: the Western Way of War?
Chapter 7. ‘People should know when they are conquered’: the reinventions of the Western Way of War