Thanks, we needed that.
Also need to add that the 'rising to the top' was well underway prior to '73. I think there is always an underground of time servers and ticket punching bureaucrats at work in the military and they need to undercut the others even while seeking all the ribbons and ranger tabs the doers and would be doers earned honestly.
There are always those who game the system but you can't do it for an entire career. Army Selection Boards are not perfect but they are the next best thing. I know, I worked there for a while. There are so many checks and balances that no one can be carried or screwed unfairly. Oh, and it's not "ranger tabs," it's Ranger Tab, and it's not given to anyone. It's earned.