Drawing on arguments in Doris (2002, 2022) [Lack of Character: Personality and Moral Behavior. Cambridge: Cambridge University Press; Character Trouble: Undisciplined Essays on Moral Agency and Personality. Oxford: Oxford University Press], this essay argues that good character is typically an insufficient “bulwark” against misconduct in military organizations, for two reasons: (1) the situational sensitivity of behavior and (2) the relatively small effect sizes associated with personality variables. Additionally, what is known about moral development and education gives limited reason to think (...) organizations are likely to have much success in inculcating reliably good character in their members. Instead, military organizations concerned to reduce misconduct should focus on developing organizational cultures structured by carefully crafted and assiduously enforced moral rules. (shrink)