of La Hitte and Paixhans) were of small calibers ill-suited to attacking fortifications. On 1 December, almost four months after Saraiva presented the ultimatum, the Army of the South invaded Uruguay. Its troops were accompanied by a semi-independent militia unit, consisting of no more than 1,300 Brazilian gaucho cavalrymen, under the former Ragamuffin Antônio de Sousa Neto. The 7,011-strong force (with 200 supply carts) marched through Uruguayan territory unopposed, heading toward Paysandú in the southwest. The disorganized and undisciplined bands of gauchos, who formed the armies of both Blancos and Colorados, were no match for the Brazilian troops. The Uruguayan gauchos "had combat experience but no training and were poorly armed save for the usual muskets, boleadoras, and facón knives", remarked historian Thomas L. Whigham. "Fire arms he [the Uruguayan gaucho] rarely possessed", said Cunninghame Graham, "or if by chance he owned a pair of long brass-mounted pistols or a flintlock blunderbuss, they were in general out of order and unserviceable. Upon the other hand, a little training made him a formidable adversary with the sabre and the lance." Field Marshal Barreto reached Paysandú on 29 December with two infantry brigades and one artillery regiment under Lieutenant Colonel Émile Louis Mallet (later Baron of Itapevi). The Army of the South's cavalry established its camp a few kilometers away. Meanwhile, Gómez beheaded forty Colorados and fifteen Brazilian prisoners and "hung their still-dripping heads above his trenches in full view of their compatriots". On 31 December, the Brazilians and Colorados recommenced their attack and overran the city's defenses, after a bitter struggle, on 2 January 1865. The Brazilians captured Gómez and handed him over to the Colorados. Colonel Gregorio "Goyo" Suárez shot Gómez and three of his officers. According to Whigham, "Suárez's actions were not really unexpected, as several members of his immediate family had fallen victim to Gómez's wrath against the Colorados." Blanco capitulation Further operations On 12 November 1864, before the siege of Paysandú, the Paraguayan dictator Solano López seized the Brazilian steamer Marquês de Olinda, beginning the Paraguayan War. While the Army of the South crossed Uruguay heading toward Paysandú, Brazil's government sent José Maria da Silva Paranhos (later Viscount of Rio Branco) to replace Saraiva. He arrived in the Argentine capital of Buenos Aires on 2 December and a few days later sought a formal alliance with Mitre against the Blancos. The Argentine president refused, insisting that neither