The Second British invasion of the Río de la Plata marked a continuing attempt by the British Empire to expand its influence in South America, following their initial success in capturing Buenos Aires the previous year. Led by Major General John Whitelocke, the expedition aimed to reclaim Buenos Aires from the local militias and re-establish British authority. On June 28, 1807, a contingent of British forces landed at Ensenada, south of Buenos Aires, intending to strategically advance towards the city. The British troops were confident, equipped with experience from previous engagements and a strong naval presence. However, the campaign was met with fierce local resistance from Spanish criollos and militias who were determined to defend their territory. The local forces utilized guerrilla tactics and knowledge of the terrain to inflict heavy casualties on Whitelocke's troops. As the days progressed, the British found their efforts to advance stalled and their supply lines threatened by the mobilizing locals. The combination of effective local defense and deteriorating British morale led to a significant setback for Whitelocke.