Seriously hoping that you are trolling.
1. Dog's cannot tell time IE they can't read a clock, but they definitely have a perception of time. Here is a quote from the animalplanet on this...
"Studies show that dogs display greater affection toward their owners if they've been separated for longer periods of time. As the amount of time away increases, so does the dogs' excitement." - http://animal.discovery.com/pets/do-dogs-understand-the-concept-of-time.htm
2. You are a judgemental piece of shit. Not all soldiers joined the army because "they couldn't go to college" or "want the army to pay for their shitty community college associate degree". There are plenty of smart soldiers out there, as well as plenty of dumb ones. As for the "dumb" ones go, so what if they didn't perform particularly well academically in highschool? That doesn't make them any less of human beings than the rest of us. In fact, I'd argue they're much better human beings than the majority of us... and significantly better human beings than you, dickhead.
Call me hypocritical, but I am going to assume that you are upper middle class or higher simply because you are on newschoolers. Not everybody has access to the same opportunities that rich white kids do. There are plenty of skids out there that simply don't have the money to go to college. The army can help provide them with this.