Quality and Resilience Determined Victory in Ancient Battles
Victory in ancient battle did not go to the ‘big battalions’, as the processes of combat were very different to the mutually devastating firepower duels of the nineteenth and early twentieth centuries [C.E.]. Fatalities from missile fire or mêlée seem to have been remarkably light until one force turned tail and exposed itself to one-sided slaughter. When victorious armies did suffer significant losses, these were usually concentrated in parts of their force that had given way before the eventual triumph. Hence, raw numbers were much less important than fighting spirit and a fearsome reputation, as good troops could stand firm even against great odds and could sometimes panic less-resolute adversaries into flight even before physical combat was joined. By far the most important variable in the model is troop quality, to reflect this psychological factor and also to show how good troops like Spartan hoplites and Roman legionaries could use their superiority in drill and discipline to achieve tactical advantage.
…Although combat did not involve heavy mutual fatalities, it does seem to have revolved around shorter-term attritional mechanisms such as wounds, exhaustion, psychological strain and ammunition depletion, so the distinction between fresh troops and those who have become ‘spent’ becomes a key means of tracking the progressive loss of resilience.