Background and objectives: This study examined the roles of rank and its interaction with armed service characteristics, including combat exposure, frequency of deployments, and length of service on psychological distress among non-commissioned military officers (NCOs).
Methods: A cross-sectional sample of 256 NCOs (Meanage = 34.10 ± 7.33) of the Nigerian Army deployed to fight Boko Haram in North-East, Nigeria, participated in the study. Data were collected using self-report instruments and analyzed using multiple linear regression.
Results: The ranks of corporal and lance corporal/private (LCP) were associated with greater psychological distress than the sergeants. However, corporals had higher psychological distress than sergeants and LCPs. Rank accounted for almost twice the variances in psychological distress more than other service characteristics. LCPs had adverse mental health at increased service length than sergeants and corporals. Also, LCPs were more vulnerable to stress at higher combat experience than the corporals.
Conclusion: 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.
Keywords: Boko-Haram terrorism; Psychological distress; combat exposure; rank; service characteristics.