
Originally Posted by
Old_Scratch
Well, battles are different today. Looking at ancient battles though, knights, legionaries, and hoplites didn't bring all their stuff into battle. Why then by the 19th century, maybe earlier, did soldiers start charging with their back pack on?
Knights had pages, Roman Legionnaries had fortified camps, Hoplites didn't have stuff; fusileers would be expected to march to a battle, fight - often almost immediately, and then pursue the enemy if victorious or run, run away if defeated. Where therein might one safely leave their valuables and probably plunder in that scenario? And in the historical examples you gave, what would be the maximum number of men involved? A Legion was about 4-5000 men, Knights numbered in their hundreds, Hoplites in a few thousand. At Leipzig there were over 500,000 troops. That's a shagload of backpacks to store and return to each individual soldier; much better from an individual point of view to suffer the extra weight but not be parted from your possessions, which were often valuable or personal.
And you must remember you are basing this question upon art as a source. Art, especially Napoleonic, had many elements - accuracy was not one of them.