Absolutely won't, and if it happens they're pretty much bound to either get immediately hunted down, or executed in an instant.
[I get one of my arms off of my jacket, showing an odd arm band with an orange circle] See this? This is a "Sam" system, it gives us updates on our health, status, orders, and even gives us certain buffs.
...Yeah if we mess up in a severe manner, it's designed to explode either killing us or leaving us severely wounded.
And in case we even take it off, we still have chips implanted into all our gear to detect our location, the higher the rank, the tighter your security will be.
There's still incidents of high ranks going rogue, but those are taken care of in just days, after all corruption is bound to happen, not like we can brainwash everyone... (edited)