The mental health of non-commissioned soldiers deployed to Boko-Haram zones in Nigeria: Examining the roles of rank and other armed service characteristics.

Other factors may be inherent in rank effect on psychological distress beyond combat experience, deployments, and service length. Nevertheless, these service characteristics are important in the rank effect on psychological distress. Identifying relevant combat-related structural problems may additionally explain the association of rank with psychological distress beyond combat experience, deployments, and service length among NCOs.