Discuss Zimbardo's argument about the military personnel responsible for the human rights violations. Was the "bad barrel" and "bad barrel makers"

Discuss Zimbardo's argument about the military personnel responsible for the human rights violations. Was the "bad barrel" and "bad barrel makers" the real and predominant causes of the behavior? Or can the behavior also be partly attributable to the personalities of the military personnel? Do you agree we can use situations and teaching to make heroes?