Remember the conscientious objectors who stood up for what they believed in.
Remember the civilians who died as "collateral damage" while the armies fought in the name of one thing or another.
Remember the gays and lesbians who wanted to fight for their country but weren't allowed to.
Remember those imprisoned for speaking out against unjust wars, or even just talking truthfully about the horrors of war. They weren't shouting "fire" in a crowded theater; they were standing outside a burning cinema telling people they shouldn't go inside.
Remember all those who struggled to retain their humanity and dignity during wartime, pity those who tried and failed to do so, and disdain those who did not even try.