Such bodies as the Council of Ministers, the Prime Minister and ministers in charge of departments of government administration, in order to exercise competencies in the field of defence, should have the ability to perform administrative functions to satisfy missions, goals and tasks in this matter assigned to them by the legislator. Their authority and duties in the defence field are closely related to their authority and duties in other areas of national security, so there is a need to arrange the organisational units set up for this purpose in such a way that their scope of action includes matters corresponding to the authority’s competence in the field of national security and defence, taken as a whole. Given the rank of the Council of Ministers and the Prime Minister in Poland, and their competencies in the area of national security, urgent changes are required to adapt the organisational units of the Chancellery of the Prime Minister (KPRM), and above all the Government Centre for Security (RCB). The RCB needs to be transformed so that it is able to fulfil the role of a national security and defence headquarters under the Council of Ministers and the Prime Minister. It would be an analytical-planning-coordination office, ensuring staff coordination of coherent, uninterrupted and continuous state activities in the field of state security and defence. Innovation in this respect would be accompanied by minor changes in the jurisdiction and structure of the organisational units comprising the KPRM. Following this, given the existing needs identified in the previous articles in this series, it seems necessary to make changes in ministries to implement a unified model of a national security organisational unit (e.g. Department for Security and Defence Affairs). In principle, these units should have similar missions and composition in all ministries, but some reasonable exceptions would occur in the Ministry of National Defence and the Ministry of the Interior and Administration. In others, there are and should be separate departments specific to those ministries (e.g. combating economic crime, international security policy, nature conservation, air protection and others).