humilitate

The process of a soldier being broken and indoctrinated through basic training by a drill sergeant, such that the ego is replaced by strict obedience to a C.O.'s every order and unwavering loyalty to your fellow soldier.

Didya see Full Metal Jacket? Man, if that Private Pyle wasn't a can short of six-pack, Gunnery Sergeant Hartman might've humilitated him instead of being shot.

self-humilitive

To put themselves down/to make fun of their self.

Dave is always self-humilitive, always making fun of himself and trying to make others laugh at him.