How did they clean up bodies after major battles? Was there some agreement among groups not to kill/fight body removers? During the crusades or other far off wars were bodies/remains sent back to families or did they leave them in theater?
Not to discourage any further answers but you'll probably enjoy these older threads:
What happened after a large battle like Cannae left a large amount of corpses in a small area? How did ancient peoples deal with he health hazards this presented? by /u/PapiriusCursor
Were there ever piles of corpses like in 300? by /u/Iphikrates