Just as the title says. Most everyone I've ever met would rather lose a fight than win by attacking someone's groin. I was wondering if that is true for societies that engaged in hand to hand combat/war? I obviously know that there have probably been people in every civilization that didn't care and did it anyway but I was mostly wondering if it was ever addressed as a rule of combat or something to that nature. Like if a gladiator nut tapped an opponent and then killed him, would that have been considered cowardly?(just an example). If this is in the wrong place please let me know and I'll post it elsewhere
More can always be said, especially from other areas; while we wait for fresh perspectives regarding attacking the family jewels, u/Iphikrates has a previous answer re how Classical Greece viewed this sort of thing.