So, in some episodes, I think especially from TOS and TNG, we see close combat training. Do we have any official info about which style they are learning exactly in Starfleet? Is it some martial arts style that we know today, like for example Karate, Ju Jutsu, MMA or whatever, or might it also be something totally different? Yet some of the movements sometimes shown during this training sequences remind me strongly of Karate actually. I'm just interested in that topic because I had trained martial arts myself some years ago and now I've restarted with that. And speaking of which: Does everyone who is in Starfleet undergo at least a basic training in close combat? It seems so, because we have episodes where even doctor characters like Beverly Crusher, McCoy or Bashir showed some fighting skills.