Quiroga, in command of 260 soldiers from the 1st battalion of Carabineros de la Guardia, embarked on the corvette "Libertad" and the schooner "Limeña", left the port of Callao on September 4, 1835, arriving on the Bolivian coast 18 days later and disembarking his ship.

[2] After two days of marching through sandbanks and gorges, the Peruvian troops appeared in sight of the port garrison made up of 87 soldiers and militiamen and which also had a fort defended by 18 artillery pieces of various calibers.

Quiroga ordered his men to advance as a guerrilla towards the Bolivian positions, ordering not to fire a shot until they reached 100 paces from the Bolivian positions, the left wing led by Sergeant Major Andrade and the right by Captain Salaverry (brother of the supreme chief).

The restorers advanced to the ordered distance under the cannon and rifle fire directed at them by the defenders, subsequently holding a lively shootout for two hours in which the leader of the square, Colonel Gaspar Aramayo, a lieutenant and 9 soldiers were killed.

another 8 wounded, their leader fallen and understanding the futility of continuing to resist, the garrison surrendered, sending the citizen-soldier Antonio Molina as a parliamentarian to communicate the surrender of the square after which the batteries, the port and the city fell into the power of the Peruvians who had 11 dead and 18 wounded during the action.