Gary Kurtz, in an IGN interview, states that he never carried a weapon while in Vietnam because he was a "conscientious objector."
"An Interview with Gary Kurtz," IGN, November 11, 2002, accessed January 23, 2023
IGNFF: Backtracking just a little bit, we were talking about towards the beginning of your career, working on the lower budget films. How did you transition to mainstream Hollywood work? What was the process for doing that?
KURTZ: It was quite convoluted, actually ... '66 I think it was. It was at the height of the Vietnam War. I was drafted into the Marines, and I spent three years in the Marines as a cameraman, a director of documentaries – even though I was actually a conscientious objector and I never carried a weapon. I carried an empty pistol holster. I was just very lucky, actually, to come through unscathed. I had four or five close friends who were also cameramen who were killed.