With increasing requirements for expeditionary support to military units, models of integrated and embedded psychology have emerged. Operational psychology represents one such model. Military operational psychologists receive specialized training, are embedded in operational units, and are employed to provide operational mission support to organizations and their personnel as opposed to providing individual health care per se. The following article describes the employment of military operational psychology and discusses its unique organizational and ethical challenges. (PsycInfo Database Record (c) 2020 APA, all rights reserved).