I'm sure there's always some back and forth inside the structure of the military but since it's insular singular top down organization it's usually not visible to civilians and they only get exposed to the consensus that military eventually reaches. Since everybody in the military is armed there's very little benefit to actively fighting with each other using sizable force because it brings no one closer to ensuring getting paid. So any staunch opponents of consensus are just getting deposed or at most assassinated. Everything usually happens quite peacefully.