This dissertation focuses on discourse, understood as an ideological practice of meaning and as a practice evocative of social identities at an institution of undergraduate military education. A particular view is developed on the identity construction process in the context of discursive practice enunciations taking place along the education of combatant officers of the Brazilian Army. Such practices reflect the representation of the symbolic systems which contribute to the shaping of this ecology and of the identities evoked from its members. The main source for analysis comprises texts interpreted as the materialization of a superior social order discourse - pedagogic discourse, produced during military maneuvers aiming at skilling combatant troops to accomplish their constitutional mission. Considering that language carries the potential of producing the orders of meaning which pedagogic discourse tries to control and distribute, the functional organization of the pedagogic-discursive practices was analyzed. Based on Halliday´s (1985) Systemic-Functional Grammar, with special focus on the ideational metafunction and transitivity, these analyses support that choices of lexicogramatical, semantic, phonological and intonation patterns build nonarbitrary semiotic systems of construction and representation of the world. These choices function producing particular meanings in the military combatant educational scope, besides being ideologically shared and appropriated by the studied community of practice, enabling social formation and representation processes. The analysis has risen the belief that the imaginary, the symbolic and the mythical march in the same cadence as that intended by the pedagogic discourse, medium which materializes the truth and factor of identity construction during the daily discursive practices that flourish at this military academy.