In view of today's physical threats, Poland has adopted a new security doctrine. This publication in its assumption intends to outline the thesis on the centralized management and command of the unified military structure, in the context of the systemic approach to our country defense strategy. The study contemplates the Russia's policy, aimed at strengthening its position of a global great power in terms of weakening ties within North Atlantic Treaty Organization, with a particular focus on the regional interests of each of its members. The presented concept of the contemporary army based on joint task forces, characterized by close co-operation of various types of forces and efficient logistics, managed by the modern chain of command, is the major development direction in the field of defense. It is of crucial importance to reorganize our military forces in correlation to the hybrid dimension of contemporary war conflicts.