commanded by Admiral William Brown. Sarandí took part in the unsuccessful attacks on the fortress of the Colonia del Sacramento in February and March 1826. Despite heavy losses, Brown continued with an offensive strategy and decided to attempt the capture of the Frigate Nictheroy, the flagship of Admiral James Norton (a former Royal Navy officer in the service of the Brazilian Navy). Learning that the Nictheroy was in the harbour of Montevideo, Brown assembled a squadron that included the Sarandí and attempted to infiltrate the harbour on April 10. The attack was compromised by an encounter with a Brazilian launch and Brown fled pursued by the Brazilian squadron. After a ruse to separate the Brazilian squadron by scattering and then regrouping failed, Brown engaged the Brazilian squadron damaging the Nictheroy until he could escape under the cloak of darkness. Brown did not give up and resolved to try again on April 27 but by mistake the Frigate Emperatriz was attacked. Brown ordered the Sarandí to move on the Nictheroy before she could reach Montevideo, but Pinedo disobeyed his orders. As part of Brown's continued aggressive campaign, on May 2, Pinedo participated in the Battle of the Ortiz bank and in the same month exchanged fire with the Maceió and on May 23 his ship was hit flush with the waterline. Pinedo participated in the convoy which resulted in the battle of Los Pozos on 11 June 1826. After Pinedo failed to engage until late in the action at the Battle of Quilmes on 29–30 July 1826 Brown relieved Pinedo of command. He was the given command of the Sin Par and cruised the coast of Brazil capturing 30 vessels, 7 of which were transferred to Buenos Aires. On 4 August 1827 he was promoted to captain, taking command of the privateer Rápido and went on to capture two more Brazilian ships. Eventually he was taken prisoner and taken to Rio de Janeiro and released after the peace of 1828, returning to Argentine in the brigantine Riobamba. The Falkland Islands On 27 October 1829, Pinedo was promoted to Major and appointed once more as commander of the Sarandí. The Sarandí was mainly employed in the area of Carmen de Patagones and Bahía Blanca. In 1831, the Sarandí under Pinedo was part of the squadron under the command of Jonas Halstead Coe (). Following the USS Lexington raid of 1831, Luis Vernet