Earlier quoted context omitted.
How does the military rating system work?
I've seen multiple. The one I like is 'pinks and blues' where you're given two of each - a pink and a blue - and you write out why you think two dudes should get a blue (good) and a bad (pink). If you start accruing a bunch of pinks, there's a problem. It's very simple and probably wouldn't pass muster with an HR department, but it was effective at getting rid of turds.
I could not find any reference to this system. As a person below said it recalls https://en.wikipedia.org/wiki/Limited_voting