My uncle is a general in the Air Force, all three of my grandfathers fought in WW2 (my Dad's biological father was killed by a drunk driver when he was 7), etc etc. I have pictures of my grandfather standing under the Arc de Triomphe in Paris with the tank squad he commanded.
Wikileaks helped change my mind quite a bit. Among the many things they published, there was one video that really stood out: POV camera from a apache as the pilot releases a missile into a group of civilians that included a number of journalists. Things like this couldn't be ignored, because of Wikileaks record. You couldn't start off down a path of rationalizing, etc. They made you face up to the ground-level reality.
I still support and appreciate the people who serve in our armed forces, but thanks to Wikileaks I have a much more nuanced,skeptical, and (I believe) more appropriate view.