Can't answer all questions but here are my thoughts:

Quote Originally Posted by jirisys View Post
-Where did everyone piss? I mean, in battle, where your clothes were stained in blood, sweat and bowels; did it even matter if you pissed yourself? What about the back ranks? What about when you were marching? Did you have to run to the nearest bush and then back into formation?
I don't think that this problem was too evident (unless the battle lasted half a day or longer). There's a quite stunning system "built-in" in (not only) humans.
Have a look for "sympathetic/parasympathetic nervous system".
And in addition from sources of later times there is quite a few hints that emptying your bladder was a "standard" part of battle preparation...

Quote Originally Posted by jirisys View Post
-When were the wounded soldiers (that were not killed by the enemy) carried away from battle? Say you're shot with a javelin to the omoplatos (scapula, for the latins), and you can't move, but you're in the middle of your crazed fellowmen. What do you do? Well, if you don't get trampled, of course. Will you stay there till you bleed out or till the battle is over (whichever one is quicker)?
From what I read I'd assume that usually the wounded as well as the dead were take care of after a battle, and soldiers belonging to the winning side usually having a better chance to be rescued.
I remember reading about a certain battle between Romani and some (Celt?)Iberian tribe that was a draw with heavy losses to both sides. The romans however managed to secretly remove quite a lot of their ead/severly wounded soldiers during the following night so that to the Iberians that came the next morning it seemed as if their losses had been much more numerous. Due to this they considered the battle lost and gave up.
It's only assuming but this seems to hint that wounded/dead were (usually) more or less ignored during a battle.
After all there was no such thing as a "Red Cross/Crescent" in ancient times...

~Jirisys ()[/QUOTE]