Imagine you run a company. You want the best employees you can find and you want to keep turn over to a minimum, because turn over costs money. Do you pay them substandard wages? Probably not, huh?
If you do pay them substandard wages and they find out they can make more money, working somewhere els; they're going to leave. If you lose all your employees and can't find more, you're going to go out of business. We can't really afford for the United States military to go out of business, unless those who oppose pay raises support conscription.