A case study is presented of the American Psychological Association (APA), as a health care organization that promotes human welfare. APA includes policies on human welfare in its Ethical Principles of Psychologists and even lists the advancement of psychology "as a means of promoting human welfare" on its letterhead. Nevertheless, APA has other policies and activities based on military and weapons work that appear to conflict with its promotion of human welfare. Although military work in and of itself may not necessarily be problematic, work that contributes to people purposely being harmed or killed should be squared with the association's ethical guidelines. The results presented here show that this may not be the case: There currently appears to be little justification in the Ethical Principles for work intended to harm people. APA's active lobbying, research, and development for the military are documented here, in relation to an analysis of the Ethical Principles. APA's uncritical support for Operation Desert Storm is examined specifically, with regard to weapons technology and therapeutic treatment of U.S. soldiers on the battlefield. This one-sided support for victims of the war is not in keeping with a Hippocratic health care ethic to treat patients needing care, and to do so with neutrality and impartiality. Similarities to a historical example of nationalistic mental health ethics are discussed, with a review of the development of the German Institute for Psychological Research and Psychotherapy and of the German Society for Psychology in the Nazi wartime effort and the Holocaust. The results here show similar deficiencies in APA's ethical standards, not the least of which is that the code applies to individual members but not to APA policies, committees, or activities. This article concludes with suggested criteria for the Ethical Principles that would at least (a) recognize the ambiguities in systematically developing and using weapons to hurt people and (b) provide an initial rationale of potential justifications.