Vietnam itself was a horrible mistake. You are making way too many assumptions here my dude. Like expecting anything remotely like competence, decency, sound strategic planning, rationality, morality, or intellect, all of which one must prove their utter deficiency in order to even be considered for a position of high office.https://www.youtube.com/watch?v=tixOyiR8B-8https://www.youtube.com/watch?v=kMzJvwG2rsQ
I am actually not even joking there was an actual literal unspoken policy of kicking the shit upwards, often with people who had connections via wealth and nepotism where you couldn't simply fire them outright so you gave them promotions so you didn't have to deal with their stupidity. George W. Bush was a great example of this. But in the field we had something called "fragging" where certain complete shithead COs got a grenade pin left on their pillow as a warning to shape up or the squad/platoon etc would murder them.https://en.wikipedia.org/wiki/Fragging#Fragging_incidents
Of course that is just explosives incidents. It would be quite easy to shoot the fucker in the jungle and claim Charlie did it, of which I am sure there are thousands of unreported incidents.