Uplifted dogs are as fanatically loyal to their pack and their pack leader as normal dogs.  The gengineers did not change that.  All dogs crave the sense of community and order that the military is built around, but uplifted dogs are just a lot better at defending it.  A growl and a bite work in some situations, but give a dog a sniper rifle and he’ll shoot the tic of a cat’s back at a hundred meters.  Or whoever the threat is.  He’ll just be happier if it’s a cat.