I THINK, that in the military, there is a culture and presumption of stupidity. For many generations, the military was a repository for people who couldn't work anywhere else, sometimes literally right out of prison into the army. During my first stretch, there were still some old guys who were obviously going through the motions and coasting to retirement who could barely read. Because of this, army culture was intended to take men who were otherwise unable to even fundamentally take care of themselves and train them to live. How to dress, hygiene, courtesy, technical language. (Those of us in the army have seen 'technical' vocabulary that doesn't exist anywhere else.) It's not so much being correct as 'making stuff up'. But if it comes from your leadership and the training command, it is correct. Period. They technicalize the language of war to prove that they aren't cavemen.
I took a tactical rifle class in between range sessions a couple of years ago from an SF E-7 with all the resume checkmarks. We were doing rifle drills, he was yelling at some of my soldiers; "Keep your gun up when your head is up!" or something to that effect, and one of the E-6s joked to him; "You mean RIFLE, don't you?" He pulled us around during the break and explained; "You people don't have the mental capacity to have me using all of your RAM to worry about saying the correct words. I want you doing the correct ACTIONS. Rifle, gun, clip, magazine, whatever. When you are fighting, and your buddy yells he needs a clip, are you going to hold it and tease him until he says magazine? I could care less how you say it, I am concerned about how you DO IT."
I have a mind that likes to file things under correctness and technical areas, but I have grown to realize that there is a difference between someone who knows how to speak correctly and technically when the forum calls for it, and someone who doesn't understand the distinctions at all. I can hang with my redneck buddies I grew up with and let the technical specs slide, but if I were writing a report or giving a class, I would speak correctly.