I'm fascinated by the logistics of war, especially throughout history. Watching a movie that depicted The Battle of Agincourt, I couldn't help but notice the huge mess and logistical tangle the battle must have caused. How did armies sort themselves out after a battle of such scale? Because even victory seems to create giant logistical hurdles.
Previous answers that may interest you
Watching GOT I got wondering about battlefields written by u/Valkine
Were corpses stripped or buried with dignity after a battle in, let's say, 15th Century Europe? written by u/MI13