Memes

Id consider that Gomer is meant to be a stand in for the 'special division' of draftees; they would literally pool togther the lowest IQ people they could find and put them into units togther.

http://medicinthegreentime.com/mcnamaras-folly-project-100000/

I think its a clear reference to this, Kubrick was making.

Given that its a reference to a mentally disabled man being tortured and forced to kill against his will, him killing his commanding officer is completely justified.