Riff off of Atrios. My military experience wasn't that people resented the anti-war people. There was always a certain amount of background noise. What we resented was people who did not understand the price we would pay for the actions they desired. When admirals were honest and recognized the sacrifices we would follow them anywhere. We knew that less painful options had at least been considered. But those in their own fantasy worlds drew the full wrath of the enlisted man. While anti-war people were freqently laughable (because they thought hope was a solution), pro-war zealots were truly dangerous.
When I talk to Vietnam veterans, it wasn't the strategic opposition that bothered them. It was the protestors at the piers and people spitting on them. Protest in front of the Pentagon all you want. But support the troops as individuals and units for doing the job the nation required of them. The troops felt that the nation lacked empathy and compassion for their sacrifice at its behest. And they were right.
Therefore, those who aggressively attack George Bush, Donald Rumsfeld, and the rest of the Band of Bunglers are not traitors. They're Americans. We are allowed to have strategic differences on whether to go to war, the conduct of the war, and the exit strategy from the war. Our troops have an absolute interest that their sacrifice is for the right reason and that the most good will come from it. The important part of supporting the troops is just that: supporting the troops at an individual and unit level. That no matter how much we may disagree with the generals and senior civilians running the war, we will honor their service to the Constitution and make good on our explicit and implicit promises (see Gulf War syndrome for breaking implicit promises) to take care of them, their comrades, and their families.
I am appalled when I see support the troops being used synonymously as support of thousands of unnecessary deaths as we train a proud nation to hate us and we destroy the foundations of our international security partnerships.