This thesis aims to study the institutional formation of the Brazilian Army, particularly with regard to the constitution of the military mentality of the group that makes up its officers. Based on the ideas of Edmund Burke, whose work, Reflections on the Revolution in France, published in 1790, it was sought to identify and understand the influences of this type of political and social thought in the consolidation of conservative aspects. of Brazilian society and its institutions, such as the Army. An interdisciplinary study was carried out, using, as a methodology, a qualitative bibliographic research, which covered the fields of history, sociology and political science. As comparative indicators between the military mentality and the conservative mentality, the ten principles presented by Russell Kirk, in the work The Conservative Mind: From Burke to Eliot, were used. The Regulations and curricula of the formation of the officer of the Brazilian Army were analyzed in the period between 1810 and 1944, as well as the profile of the officer today, using, for this, the research carried out by the Support Program for Teaching and Scientific Research. and Technological in National Defense (Pro-Defense). Burkean conservatism was inserted in Brazilian society during the Empire and some of its aspects were adapted to our Iberian culture, which developed a type of conservatism with conciliatory features. Originating from this society, the Army also consolidated, throughout its historical evolution and the process of professionalization of its officers, a military mentality with firm conciliatory conservative traits that until today can be identified by the symbolic capital of these professionals.