During 23 July a heavy cannonade and musketry duel took place. Gutiérrez managed to recruit more effectives and station them in the castle, as well as moving the forces from the Sta. Cruz fortress, now unnecessary, on to Paso Alto. The British, who lost two men, were under pressure and had a difficult time. Nelson, from the "Theseus", called the troops back. Once they were on board, the three frigates slipped before the Candelaria beach and the Barranco Hondo, firing into the cliffs, intending to frighten and silence the defenders. With the British thwarted in Valleseco, Gutiérrez guessed Nelson's next move and brought most of the artillerymen to the port batteries, leaving just 30 militia men in Paso Alto. The British could not see the Spanish troops' movements from one place to another, so they deemed the Spanish force larger than it actually was.