<p>High physical and psychological stress has a negative and even detrimental effect on military personnel, which can lead to maladaptive and deviant forms of behavior. It is relevant to study the dynamics of the tendency to deviant behavior as military personnel grow professionally. Purpose: to study the differences in the manifestation of a tendency to deviant behavior in military personnel of different official categories: privates, corporals, sergeants and warrant officers; contract and conscription employees, persons with higher education and secondary education. Methods: Scales of propensity to addictive behavior; Questionnaire of propensity to delinquent and addictive behavior (DAB-2); SADS-30 (Suicidality, aggression, drug addiction, substance abuse); Questionnaire for detecting early signs of alcoholism; Questionnaire for diagnosing Bass-Perry aggression-24; factor analysis, Mann-Whitney and Kruskal-Wallis criteria. Subjects: 42 male military personnel of different job categories (under contract, conscription; privates, corporals, sergeants and warrant officers), aged 18&mdash;30 years. Results: it was found that the propensity to drug addiction is less pronounced in contract employees (p&le;0.05) and in non-commissioned and junior officers (p&le;0.05). Factor analysis has shown that most deviations constitute a single factor, which includes indicators of aggression both towards others and towards oneself; one can note a reduced tendency to delinquent and other forms of deviant behavior, but an increased risk of going into addictive or suicidal behavior. This is also accompanied by a low focus on military service. Conclusions: during the study, it was found that there are differences in the manifestation of a tendency to deviant behavior among military personnel of different official categories: privates, corporals, sergeants and warrant officers. Continuing to serve in the army (under contract) is associated with a decrease in the tendency to manifest deviations.</p>