Several years later, Argentina became involved in a conflict against the United Kingdom and France. This came with the November 20, 1845 Anglo-French blockade of the Río de la Plata. The combined forces from the United Kingdom and France seized control of the Paraná River in order to establish trade relationships with Paraguayan ports blocked by Argentina. The Army of the Argentine Confederation, commanded by General Lucio Mansilla, expelled the invaders causing severe damage to the 11 warships by shooting from both river's shores, at the cost of 150 Argentines killed and 90 wounded. Although the invading troops took fewer casualties (26 killed, 86 wounded), they decided to leave in order to preserve the remaining ships. It was the last attempt on Argentine rivers by the Royal Navy. Other notable conflicts include the following: