For what its worth, I left the military in late 2000, and was then Navy reserve. I still keep contact with a lot of my military friends, many of whom have been recalled. I have friends that have filled open slots on recall all over the place, including one guy, 46, who when he put in his retirement papers, was told "no" and given 9 month orders to Quatar, then Iraq. And this is the second time he was recalled to fight Iraq, first time was in Storm, when we were both recalled.
Anyway, I would say that my military buds are split 50/50 on supporting Bush and this war. That is kind of significant because I would guess that among the same group 90% or more did not approve of Clinton. Now when called upon, of course they go and do their jobs, even if they do not agree with policy. If my phone were to ring I would go too, even though I could give you chapter and verse why this war is a huge mistake. Its simple, when told to go, we go.
It would be a mistake therefore to think that because the men and women are doing their jobs over there that they must all support the decision to go to war. That is simplistic thinking.
I think one of Kerry's problems was that a lot of military that do not support Bush, the war in Iraq, etc., found it hard to support Kerry. They recognized his service in Viet Nam, riverboat duty was extremely dangerous, they also I think universally agree that View Nam was a dreadful mistake, but they rejected him because they did not like they way he opposed the war after he got home. His vote against the first Gulf war also hurt him. So, its my sense that Bush did get votes from military types that, nonetheless, in their hearts did not support the war in Iraq or his overall foreign policy.