Recently I've been teaching a whole lot of Intro to Stage Combat workshops in various settings, and I have a few more coming up in the near future. I've been saying for quite some time that the basics of stage combat are essential skills for actors, as well as incredibly useful for other disciplines within theatre & film. I would also say that taking such a workshop could also be a really interesting adventure for those outside of professional entertainment.
I've written a whole lot about this subject (a dissertation and several articles) and have been the subject some interviews and so on in this capacity as well, so some of what I'm saying here I've said before, but anything I'm repeating is worth writing about again.
The first priority of a fight director is the safety of the performers. For a profession with such a badass reputation, the practitioners spend a whole lot of time and energy being concerned with the well-being of everyone involved.
Stage combat has more in common with a combination of ballroom dance and stage magic that it does with any actual fighting discipline. Once an illusion is decided upon, it becomes a matter of figuring out how to best execute it within the skill level of the cast and in the time allotted. This can be as "simple" as someone being slapped and/or falling down, or as complex as a duel to the death with chainsaws. The illusion must also further the story being told and support character development. If the fight director has done their job well it should be nearly impossible to determine where the director's work ended and where the fight director's has begun.
I'd like to take a moment to discuss why the the study of stage combat is important and why acquiring some familiarity with the skills involved in portraying violence in performance should be given some priority across the various disciplines.