Wounds and injuries will always happen when fighting. Any advice on treating them? Are ointments and salves a good idea?
It depends on the injury and what you’re applying.
For minor cuts and scrapes, the first thing you want to do is disinfect the wound. Rubbing alcohol works best for this. Turns out, hydrogen peroxide, doesn’t really. Worst case, clean water will clear debris from the wound, and can wash away some potential contaminates. There are other potential disinfectants, though, usually, alcohol is the one that comes to mind for me.
For what it’s worth, even hard liquor will work for this. So if you’re wondering about a western where people are using whiskey or gin to clean a wound, that does work.
On the other hand, ground water, rain water, or melted snow will not, and can present another potential vector for infection. If you boil it first, it can be used to clean a wound, but it wouldn’t have any disinfecting properties.
Once a wound has been cleaned, you can apply a gel to seal the wound over. Most of the time you’re talking about something like petroleum jellies (so Neosporin or Vaseline). These are, technically ointments, if you’re wondering. Another possible (and messier) example would be honey. The stuff is thick enough that it becomes a bacteriostatic barrier, and that can help to seal a wound while it heals.
After that, you can bandage it up and you’re good to go.
Some important details though. Understanding how bacterial infection works is a fairly modern concept. Particularly, understanding bacterial infection and the need to disinfect wounds dates to the mid-19th century. So, knowing you need to use whiskey to clean a gunshot wound in 1895 Texas make sense. Doing the same during the civil war, slightly less so.
More serious wounds will require more involved treatment. Someone who’s been shot or run through will require more extensive medical treatment than just slapping on an ointment and hoping for the best.
For broken bones, you’d need to stabilize and immobilize the break. Yes, setting breaks is a thing. No, you shouldn’t do it unless you’re a trained professional. Also, it’s much harder than TV makes it look.
If someone has been stabbed, and the blade is still sticking out of them, don’t pull it out. Leave that for the actual medical professionals. You’ll do more damage, and increase the bleeding, getting it out, than you would if you left it there. The same thing goes for arrow shafts, bullets, or, really, any other foreign object stuck in someone. Unless it’s actively continuing to kill them, don’t remove it. Seriously, pulling it out, and especially digging it out, will do more damage. There are some rare edge cases, but leave those for the professionals, who know what they’re doing. Pulling the knife out of your buddy can be a fantastic way to kill them. I mean, if you want to pull the knife out of yourself to stab someone else, sure, that’s kinda badass. Stupid, unhealthy, and a terrible idea, but have fun with that.
With bruises, there really isn’t much to do. You can watch it, and make sure that the swelling starts to come down. If it doesn’t, then that’s a much more serious issue. Otherwise, it’s just a sub-dermal (meaning below the skin) hemorrhage (meaning bleeding). You can put ice on it if that makes you feel better, but, really, it’s simply there.
Really, minor bruises are a fact of life for most fights. You’re going to pick some up no matter how “good” you are. Armor does help a lot with these. If you’ve got some anesthetic cream you want to smear on one, feel free. It’s (probably) not hurting anything. You can ice it, if that helps manage the pain, for you. Or you can live with them. Outside of some extremely rare cases, they’re not life threatening.