The second is to avoid orders where you don't KNOW whether or not they will be obeyed.
Officers that don't learn these rules rarely make it long enough to become old officers.
I'm not sure what makes the Democrats believe that the military would follow their orders. There might be some leftist senior officers but they could not be sure that the rank and file members would go along rather than turn their weapons on the senior officers.
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)