The study contents a review of selected areas dedicated to the military cooperation between the states of the Visegrad Group. It reveals its evolution from the simple forms, e.g. joint inspections through the framework of the Treaty on the Conventional Forces in Europe, including participation in the missions of the international organisations like in the common Multinational Division Central-South (MND-CS), until forming the joint Battle Group for the European Union. Visegrad Group states through cooperation with the new European structures returned to the area and the European defense structures. In particular, the role of ties with NATO structures and defense policy of the European Union. An important element of the V4 countries cooperation was the signing of a memorandum on the establishment of joint military units. Creating a common battle group is in progress. Currently invited to Ukraine to work well. It is anticipated That Eventually this battle group created in 2016.