Nothing terribly high-brow from me, but the mention of “gun” reminded of the training scene in Full Metal Jacket when the recruits are being taught the difference between “rifle” and “gun” 😉
A different era, but I have a friend driven near apoplectic when people refer to any tracked vehicle as a “tank”!
I suspect all such niceties disappear away from the drill ground when orders need to be short clear and kept to a minimum.
