Abstract: Given the risk for posttraumatic stress disorder (PTSD) and moral injury to negatively impact relationships of veterans, researchers have increasingly focused on social functioning assessment. However, extant studies have often relied on self-report methods and relatively broad relational measures. To better understand the dynamic process of social functioning, it is important to determine how others perceive those veterans and their interactions. Interpersonal circumplex assessments, such as the Impact Message Inventory-Circumplex (IMI-C), may provide that perspective by asking others to rate observations of veterans’ social behaviors on a circular pattern of eight octants representing unique blends of two orthogonal dimensions: affiliation (cold–warm) and control (dominant–submissive). This case study demonstrated how the IMI-C can be used to examine significant others’ perceptions of veterans with PTSD and moral injury in the context of a novel positive psychology treatment focused on inducing moral elevation. Using a fine-grained analysis of interpersonal behaviors, this study described two cases of veterans who demonstrated notable pre–post changes in how they were perceived by others, providing contextual information including quantitative changes in PTSD symptoms, moral injury, and quality of life, as well as qualitative reports of interpersonal changes. Clinical and research implications are discussed. (PsycInfo Database Record (c) 2023 APA, all rights reserved) — Posttraumatic stress disorder and moral injury can harm the relationships of veterans; therefore, it is important to assess social functioning in treatment. Incorporating observer ratings could provide a unique perspective that may capture important changes. A review of two veteran cases and reported observations from their loved ones highlighted meaningful changes in how veterans related to others before and after a positive psychology intervention. These results offer early support for the intervention and the use of this observer rating Method in future trauma-focused treatment. (PsycInfo Database Record (c) 2023 APA, all rights reserved)