This study assessed risk factors and symptoms of post-traumatic stress disorder (PTSD) among Nigerian Air Force (NAF) personnel at NAF Base Kaduna. A cross-sectional descrip- -tive design was employed with a sample of 207 uniformed personnel selected from a target population of 405 using the Krejcie and Morgan (1970) sampling table. A structured questionnaire comprising four validated sections — covering PTSD knowledge, risk factor endorsement, symptom identification via the Harvard Trauma Questionnaire (HTQ), and PTSD prevalence via the PTSD Checklist for DSM-5 (PCL-5) — was administered with a 100% response rate. Data were analysed using descriptive statistics and Pearson product-moment correlation. Respondents had a mean age of 41 years and were predominantly male (86%). Good PTSD knowledge was demonstrated by 83.6% of personnel. The most frequently endorsed risk factors were lack of social support (46.9%), loss of property (43.0%), and poor camp conditions (42.0%). The most intensely reported symptoms were difficulty adapting to new situations, feelings of betrayal, and persistent exhaustion. A 21.9% prevalence of probable PTSD was established using a PCL-5 cut-off of ≥ 33, indicating approximately one in five personnel affected. Years of service (r = .798, p = .016) and educational qualification (r = .731, p = .028) were both significantly and positively correlated with PTSD knowledge. The findings highlight a substantial psychological burden and underscore the urgent need for routine mental health screening, psychoeducation, and traumafocused interventions within the Nigerian military health system.