Santiago de Liniers, recognized for his military leadership, played a crucial role in reclaiming Buenos Aires from British troops who had secured the city during the first British invasion earlier in the year. The British, motivated by trade and strategic interests, captured Buenos Aires, leading to dissatisfaction among the local populace and colonial officials. In response, Liniers capitalized on local grievances and rallied groups of Criollo militiamen and loyalist forces, emphasizing the urgency of rejecting foreign occupation. His decisive actions culminated in a successful attack on the British garrison on August 12, 1806, which ultimately resulted in the liberation of Buenos Aires, allowing the city to return to Spanish control. The reclaiming of Buenos Aires not only reaffirmed local leadership but also instilled a strong sense of national identity among the residents and the broader population of the Viceroyalty of the Río de la Plata.

This operation represented a collaborative effort among various local factions, showcasing a growing unity among Creole citizens, which would parallel emerging Argentine nationalism. Liniers' victory inspired further local resistance against British forces, highlighting the tensions between colonial authorities and foreign powers. Following the successful re-capture, Buenos Aires became a focal point for anti-colonial sentiments, setting the stage for future uprisings and the eventual push for independence from Spanish rule. The implications of this conflict extended beyond mere territorial control, as it symbolized the evolving desire for autonomy and self-governance among the southern South American colonies.