The ability to work in a team is a skill of special relevance for multiple facets of life, increasing performance and optimizing the process in any task. This work aimed to study whether teamwork skills were related to different health variables. The sample consisted of 671 military personnel from the Spanish Army. The instrument is composed of the Health Literacy Questionnaire--the Teamwork Skills Questionnaire, and Rosenberg's self-esteem scale. The study concludes that the level of teamwork skills of the military is high, as well as their level of health literacy and their self-perception of health. However, their self-esteem is medium. Teamwork competencies are positively associated with a higher level of health literacy, with a high self-perception of their health, with the level of physical activity and negatively with self-esteem and the number of hospital admissions.