The article concerns the operation of human teams in critical situations on the contemporary battlefield. Soldiers acting together during combat operations gain confidence in each other are able to see the strengths and weaknesses of their commander and themselves. Nothing unites the human team as much as living together in crisis situations, where human life and health depend on proper cooperation and exchange of information. It is the Commander who is responsible for his subordinates. The competences of the leader contribute to how efficiently this team will deal with emerging threats.