The military up and down the ranks was never going to line up at the southern border with their machine guns to commence firing on unarmed civilians. This is no matter who the unarmed civilians would be. Any order to do that is not a legal order, it is not an order that is moral and it certainly would not be an order that is ethical. This is not what the US armed forces do.
Indeed any such order would violate all the Geneva Conventions, all the Laws of War and every provision of the Law of Land Warfare. All members of the US armed forces know this but they anyway would never do any such crime against humanity.
President Trump says that aiming machine guns at migrants would be a "very effective" deterrent — but vowed the United States would not use that method.
www.yahoo.com
Troops of the United States armed forces would never use any weapons of any kind in any such a way. Not anywhere and not at any time, place, circumstance. Yet and as I'd posted, the military at the border with machine guys was a RW wet dream for decades and the RW thought they had their guy in Trump the Bloodthirsty President / Commander in Chief and Wannabe Barbarian. Yet the RW has always been wrong wrong wrong about this.
The RW has no clue of the US armed forces up and down the ranks but then again neither do 98.6% of Americans have any clue of who are the members of the highly professional and ethical AVF. Indeed, too many Americans talk about the troops of the AVF and their NCO's and officers as if the AVF were the PLA in Tiananmen Square in 1989 which is grotesquely wrong, crude and offensive. It is repugnant.