The idea of cooperation between European states in terms of security was born in 1950 with the publication of the Pleven Plan. Although the project implementation did not see the light of day, the question of establishing a European army is still relevant. The European federalists are advocates of this idea. They believe that the advantages such as the existence of a single military force in charge of protecting European society and identity, outweigh the possible negative consequences such as negative relations with the United States. Considering the connection of the countries in other areas and the potential obstacles in making the decision, the Security Council will have to do the demanding work. If the provisions come to pass, it will represent only the first step in the process of establishing joint forces. The paper analyzes the profitability of the project and the three most common formation models: the European defense force model, the rapid intervention force model, and the combat group model. In the end, the views of the citizens collected by the Eurobarometer are presented, and whose voice of the power holder plays a major role in the democratic system.