It’s the whole reason every soldier and marine has to pass a rifle qualification in basic training/boot camp.
My father in law once mentioned that as the reason he went Navy instead. (Sailers are apparently all firefighters first and foremost.)
I suppose it’s also maybe a good argument for picking the [ch]Air Force.
I would recommend the Coast Guard for anyone who wants to not be involved with the killings of many people and mostly doing good. Sure, there are a handful of roles that do kill, but the vast majority are involved with things like search and rescue or ensuring shipping is done safely, and things like that. They also deal with drug smuggling, which has some ethics issues as well, but as far as military service goes (and getting the benefits from it) it’s easily the best choice.