As for one shot / one kill Id save that for a sniper. Anything else is not so clear.
The U.S. Air Force's latest air superiority fighter, the F-22 Raptor, is often praised for, and was developed for, the ability for "first look, first shot, first kill."
I know I talk about Saotome's Aikido and the Harmony of Nature quite a bit, but that's because it's my favorite nonfiction book. Saotome Shihan, a gifted artist with both sword and pen, draws a log bridge over a chasm with a clock at the base of the log. Two men stand over the ravine with swords, and left and right are not options. I find great metaphors in this and all his drawings, so I recommend checking that one out along with the pertinent text and the rest of the book.