Manifestations of self-awareness, self-esteem, self-congruence by adolescents during military service is a topical subject for psychologists, because this age is characterized as a specific, sensitive period for self-confidence building. Self-consciousness influences the human activity, actions, communication and general development. Structures of self-esteem can motivate certain activities, actions, whilst military service (in accordance with the Regulation, specific conditions, established requirements,norms of conduct) requires an appropriate behavior. The Rosenberg Self-Esteem Scale (RSES) score provides the practicing psychologists with a first indication of possible problems a person has, in terms of self-esteem.