The days of blind obedience are long gone
Instant obedience has a purpose. Father in law, a REME staff sergeant, was pinned down by sniper fire in Normandy when his team were attempting a tank recovery. His corporal thought he would pop up and have a look and try and locate the sniper. FIL shouted to the corporal to get his head down. "Hang on staff, I think I can see the bugger --- bang. Corporal no longer had much of a head to get down. Shame FIL didn't have time to give the corporal detailed reasoning for his order!