This work aims to the study of the forms of solidarity and conflict in interpersonal and formal relations between chief, officers, non-commissioned officers and soldiers of the Group of Artillery 3 of the Argentine Army during the Falklands War and in the postwar period. The experiences of combat in the war put to test the consistency of these relationships in its formal or institutional and interpersonal dimensions. In the extreme reality of the war, in which fighters were daily exposed to death, there were conflicts in hierarchical relationships between officers, non-commissioned officers and soldiers, inside each of those groups, and in the interpersonal relationships between all the individuals. However, in these contexts, they also revealed altruistic behaviors, solidarities and exceptional loyalties. Such solidarity and conflict produced in the war, in turn, projected -not without changes- during the postwar period. Those war experiences of solidarity and conflict will be analyzed in their inscriptions or in its relations with different timeframes as the veterans themselves lived, recognized and felt.