The European Union's development path as a supranational organisation in which a single political, economic, and security space on the European continent prevails was not simple and easy. For many years, the European community's ideological creators have been looking for a supranational model that would simultaneously meet the times' challenges and ensure economic prosperity, internal stability, peace, and security in Europe. Such an organisation should have had a role in the international order. In European politics and science, there have been differences of opinion on whether the EU should develop a crisis management system or not. The need for the EU to develop its capabilities in foreign and security policy has influenced the establishment of the crisis management system as we know it today. Thanks to that, the European Union is an important player in world security, especially through military and civilian operations.