There is a lot of interesting info here, personally, as an old combat medic, Today in my EDC pack I keep a roll of fabric tape, a tourniquet, a large gauze pad and a few other things. The goal, for me, would just be to keep someone alive until medical care arrived. I dont have room to carry all the things necessary for total field triage, and I cant save everyone, thus I have to pick a level of care and go with that... You can do a hella lot of care with tape, I recommend everyone carry tape of some sort. For me it is fiber cloth 1" medical tape, with that I can do a lot of things...