Amidst rising discontent in Portugal, a revolt erupted in Oporto, driven by dissatisfaction with the military dictatorship established by General Gomes da Costa. The military’s grip on power had led to economic difficulties and widespread public frustration. The revolt galvanized support not just from military personnel but also from civilians who were eager for political change and an end to tyranny. The insurgents sought to establish a new government advocating for democracy and improved living conditions for the citizens of Portugal.

The situation rapidly escalated as armed conflicts broke out in the streets of Oporto, with both sides employing significant military resources. The government responded aggressively, deploying loyal troops to quash the rebellion. As skirmishes intensified, the struggle showcased the deep divisions in Portuguese society regarding the military regime and its governance. While the rebels had initial success in rallying public support, the government’s superior resources ultimately began to turn the tide. Despite the rebellion's failure, it highlighted the widespread desire for political reform.

The uprising had important implications for Portugal's political landscape, as it reinforced the idea that the military dictatorship faced substantial challenges. The discontent it revealed among both the military and civilian populations would continue to fuel further resistance against authoritarian rule. This unrest would set the stage for future political mobilizations, culminating in significant events that would reshape Portuguese governance in the years to come.