As an example of this, watch old videos of Clinton walking by Marines and other armed forces personel, he was rarely saluted. It is only required that members of the armed forces stand at attention when the President Passes by, it is not required for them to salute. They only do so out of choice and out of respect. By and large the US militarypersonal do salute Bush.
And Reg though i see the angle you are coming from, i greatly disagree that our soldiers dont think, you should meet some of them. The thing that they are taught is duty. There are no doubt soldiers in Iraq right now that disagree with the war, but they understand what they chose to sign up for, and are willing to complete there duty as long as they are not ordered to commit hanus crimes. Its about honor and fulfilling what you swore to fulfill. Those same soldiers are not going to be blind sheep and answer on an opinion pole that they aprove of Bush if they dont.
I personally know a number of people that disagreed with the clinton policies in somalia, but still fulfilled there duty...