Objective: Professional social workers and emergency workers operating in war contexts may develop posttraumatic stress disorder (PTSD) following exposure to traumatic events. Impact of trauma must be accurately assessed by researchers via robust models of measurement. In this article, measurement models for the 13-item Children's Revised Impact of Event scale (CRIES-13), Arabic version were assessed in an adult population operating in a war context. Method: A sample ("N" = 218) of in-service adult Palestinian helpers was evaluated using confirmatory factor analysis. Results: Findings supported adoption of a bidimensional model comprising two normally distributed measures labeled intrusion and avoidance as a quantitative screening tool for PTSD in contexts of military violence. Conclusion: The solid psychometric properties of CRIES in an adult population suggest its use as a short version of the Impact of Event scale-Revised (IES), Arabic version (IES-R-13).