The European Union is one of the leading players in the struggle for the maintenance of peace and security of mankind. In the field of common European integration, the State defense of the European Union is of great importance. In the fight against new threats and challenges, the European Union devotes more and more time to this issue. Brexit, illegal migration, terrorism, armed conflicts and crises have given a new wave of discussions about the formation of the European Union's own army. The purpose of the creation, which is to strengthen its own defense and reduce dependence on NATO.