The purpose of this paper is to assess the extent to which the Ministry of Defense, an institution of critical importance for today's societies, is impacting civil-military relations in Brazil. Ultimately, this translates into a strengthening of civil controls geared toward achieving civil supremacy over the Armed Forces, which are a fundamental tool that the government has at its disposal. The process of establishing and implementing a Ministry of Defense is not linear, but winding. It depends both on the policies adopted by the Ministry of Defense itself and on the relationships established among the military personnel, the Government and the rest of society. After a brief analysis of the problem and of the Brazilian situation, we tried to examine the "hits and misses" of the Ministry of Defense in connection with civil-military relations in Brazil. We also looked at the organization of the defense system in our country. Indeed, Brazil is still far from a situation where civil supremacy is a reality, notwithstanding the fact that major gaps in the "echelons" of civil supremacy are being bridged. Since the creation and implementation of a Ministry of Defense is a process, the decisive involvement of the country?s politicians and of large segments of the civil society become necessary in order to do away with much of the apathy that Brazil is currently experiencing.