History of Uruguay - Paraguayan War

Paraguayan War

In 1855, new conflict broke out between the parties. It reached its high point during the Paraguayan War. In 1863, the Colorado general Venancio Flores organized an armed uprising against the Blanco president, Bernardo Prudencio Berro. Flores won backing from Brazil and, this time, from Argentina, who supplied him with troops and weapons, while Berro made an alliance with the Paraguayan leader Francisco Solano López. When Berro's government was overthrown in 1864 with Brazilian help, López used it as a pretext to declare war on Uruguay. The result was the Paraguayan War, a five-year conflict in which Uruguayan, Brazilian and Argentinian armies fought Paraguay, and which Flores finally won, but only at the price of the loss of 95% of his own troops. Flores did not enjoy his Pyrrhic victory for long. In 1868, he was murdered on the same day as his rival Berro.

Both parties were weary of the chaos. In 1870, they came to an agreement to define spheres of influence: the Colorados would control Montevideo and the coastal region, the Blancos would rule the hinterland with its agricultural estates. In addition, the Blancos were paid half a million dollars to compensate them for the loss of their stake in Montevideo. But the caudillo mentality was difficult to erase from Uruguay and political feuding continued culminating in the Revolution of the Lances (Revolución de las Lanzas) (1870–1872), and later with the uprising of Aparicio Saravia, who was fatally injured at the Battle of Masoller (1904).