Professional clinicians and human services providers are increasingly attributing the mental health problems of American Indians (AIs) to historical trauma (HT). As an alternative to established psychiatric disorders, AI HT was formulated to explain enduring mental health disparities as originating in tribal experiences of Euro-American colonization. As a result, AI HT has been described as the collective, cumulative, and intergenerational psychosocial disability resulting from massive group-based oppression, such as forced relocation, political subjugation, cultural domination, and genocide. One objective of the HT construct is to frame AI distress and dysfunction in social and historical terms. Given widespread indigenous experiences of colonization, the debilitating effects of HT are presumed to affect most AI communities today. With this background in mind, I explore AI HT with specific reference to a "war narrative" obtained by an anthropologist in 1901 from an elderly Gros Ventre woman. In this account, Watches All described her participation in a historic intertribal battle, and her subsequent captivity and escape from the enemy during the late 1860s. This historical narrative references many first-hand experiences that would today be identified as traumatogenic. Interestingly, however, this account complicates several assumptions underlying AI HT, leading to vexing questions of whether Watches All’s ordeal actually qualifies as an instance of AI HT. No matter how one answers these questions, such ambiguity highlights serious theoretical confusions requiring elaboration and refinement if AI HT is to remain a useful construct in the behavioral health sciences.