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We examined the frequency of trauma types reported in a cohort of service members seeking treatment for posttraumatic stress disorder (PTSD) and compared symptom profiles between types. In this observational study, 999 service members (9.2% women; M_age = 32.91 years; 55.6% White) were evaluated using a standardized assessment procedure to determine eligibility for clinical trials. Participants were evaluated for DSM‐IV‐TR‐defined PTSD using the PTSD Symptom Scale–Interview; all participants reported a Criterion A event. Independent evaluators rated descriptions of Criterion A events as belonging to trauma types at a high degree of reliability, κ = 0.80. Aggregated non‐life‐threat primary trauma types were more frequently endorsed than aggregated life‐threat types, 95% CI [17.10%, 29.20%]. Participants who endorsed moral injury–self traumas had a higher level of reexperiencing (d = 0.39), guilt …