But Russian soldiers on the intercepted calls appeared doubtful that they would have enough commanders to lead the new units, or enough weapons and ammunition to arm them 979 days into Moscow’s invasion.

From what I can guess, I don’t think they need to hold a gun or fire any bullets to accomplish what Moscow wants out of them. Russia will march those North Koreans out in “meat waves” to absorb Ukrainian bullets and drones while forcing Ukrainian defenders to reveal themselves to shoot the North Koreans forcing themselves be targeted by artillery.