Since its establishment in 1889, the history of the Brazilian republic was marked by the centrality of the armed forces, particularly the army, in political life. But between 1964 and 1985, the military was in direct command of the state, imposing indirectly elected generals as president. After overthrowing the reformist center-left government of João Goulart on March 31, 1964, the military installed a tutelary authoritarian regime to control civil society and the political system, serving as a political model for similar regimes in Latin America during the Cold War. The military passed arbitrary laws and severely repressed left-wing political groups and social movements while also seeking to accelerate capitalist development and the “national integration” of Brazil’s vast territory. They intended to modernize Brazilian industry and carry out bold infrastructure projects. On the other hand, they faced strong opposition from civil society, led by political groups, artists, intellectuals, and press outlets of diverse ideological backgrounds (Marxists, liberals, socialists, and progressive Catholics). These groups were divided between total refusal to negotiate with the military and critical adherence to the policies of the generals’ governments, composing a complex relationship between society and the state. Understanding the role of the military regime in Brazilian history requires a combination of historical research and historiographic criticism in light of the disputes over memory that continue to divide social and political actors.