Between 1924 and 1927, a column of around fifteen hundred men crossed Brazil from end to end, covering approximately twenty-five thousand kilometers through thirteen states, never once being definitively defeated in the field. The Prestes Column, officially designated the 1st Revolutionary Division, also became known as the Miguel Costa-Prestes Column and stands as one of the most extraordinary episodes in Brazilian military and political history—a symbol of the tenentista resistance against the oligarchic regime of the Old Republic.
The movement arose from the dissatisfaction of low-ranking military officers with the government of Artur Bernardes and the dominant political system, known as the "coffee with milk" policy, which alternated power between the oligarchies of São Paulo and Minas Gerais. The lieutenants who led the uprising did not advocate for a military government; on the contrary, their demands were civilian and progressive. They called for the implementation of the secret ballot, the defense of public education, compulsory secondary schooling for all, and an end to poverty and social injustice. It was, therefore, an expression of revolt by the middle classes against the dominance of the agrarian elites who controlled national politics.
The spark for the Column came in the wake of the 1924 São Paulo Revolt. On October 28 of that year, in the Missões region of Rio Grande do Sul, Captain Luís Carlos Prestes led the uprising of the 1st Railway Battalion of Santo Ângelo. Other battalions and cavalry units rebelled simultaneously in cities like São Luiz Gonzaga, São Borja, and Uruguaiana, under the command of officers such as Pedro Gay, Rui Zubaran, and Juarez Távora. Antônio de Siqueira Campos, who had returned clandestinely from exile in Buenos Aires, also took part in the initial actions.
Government forces responded with a massive deployment of men. In December 1924, around fourteen thousand soldiers marched on São Luiz Gonzaga with the goal of encircling the rebels. Prestes’ strategy, however, proved superior: his men were dispersed around the city, and the constant mobility he called "war of movement" allowed the Column to break through the siege undetected. In January 1925, at the Battle of Ramada, the rebel troops prevailed despite significant losses—fifty dead and a hundred wounded—and continued their march toward northern Rio Grande do Sul.
The crossing of the Uruguay River cost the Column nearly all its horses, forcing them to advance on foot through Santa Catarina. In Paraná, the rebels won important tactical battles, such as the maneuver at the Separação line, where Prestes managed to pit two loyalist columns against each other. In April 1925, the remaining São Paulo forces from the 1924 Revolt joined the Column at Foz do Iguaçu, consolidating the 1st Revolutionary Division under the shared command of Prestes and General Miguel Costa. The four operational detachments were led by Siqueira Campos, João Alberto Lins de Barros, Cordeiro de Farias, and Djalma Dutra.
The march advanced into Mato Grosso, crossing Paraguayan territory to evade encirclement. In the country’s interior, the rebels clashed with loyalist forces in battles in Mato Grosso, traversed the Paranã mountain range, entered Minas Gerais, and returned to Goiás, always employing the tactics of dispersion and mobility that prevented the government from forcing a decisive confrontation. In one such episode, the insurgents split into small units that planted false trails to mislead pursuing troops.
The social composition of the Column deserves special attention. Though led by military officers, most of the soldiers were rural workers, many illiterate or semi-literate, recruited along the march through the regions they passed. Around fifty women took part in the expedition, nearly all from the Gaúcho Detachment, and some even fought alongside the rebels. This diversity gave the movement a popular dimension that transcended its strictly military profile.
After two and a half years of marching, without ever achieving the political goals that had motivated the uprising, the Column crossed the border into Bolivia in February 1927, formally ending the movement on foreign soil. The defeat, however, was relative. The Column had demonstrated that the oligarchic government was not invincible, that organized resistance existed in the country, and that the lieutenants’ demands resonated with broad segments of the population.
The legacy of the Prestes Column would only become clear in the years that followed. By weakening the prestige of Artur Bernardes’ government and exposing the contradictions of the Old Republic, the movement paved the way for the 1930 Revolution, which put an end to the "coffee with milk" policy and ushered in a new phase of Brazilian history. Luís Carlos Prestes, in turn, would become one of the most controversial and influential political figures of the 20th century in Brazil, adopting increasingly left-wing positions and later converting to communism. The epic of the march, however, remains one of the most fascinating chapters ever written about courage, resistance, and the ability of a small group of men to challenge the power of an entire state.