The Battle of Tuiuti was a significant conflict during the Paraguayan War, fought on May 24, 1866. This battle involved the forces of Paraguay, led by Francisco Solano López, against a coalition of Brazil, Argentina, and Uruguay. It was one of the largest battles of the war, with thousands of soldiers engaged in intense combat. The battle took place near the Tuiuti stream in Paraguay and resulted in heavy casualties on both sides. Despite the fierce fighting, the outcome was inconclusive, with neither side achieving a decisive victory. The battle highlighted the brutal nature of the war and set the stage for future confrontations.