Congressmen's sons were rarer then hen's teeth in the military. They would have been treated like royalty in the military even more than they are in civilian companies because promotions are so political and officers are scared sh*tless of "Congressionals"..
"General, you did a good job shining my shoes, I'll commend you to my father."
And the thought that a Congressman's son would need pull to get into a six year commitment when he could have been drafted for two years and served his time in Hawaii is an insult to common sense.
Especially Repubican Congressmen in Texas.