The Assault on Cadiz was a part of a protracted naval blockade of the Spanish port of Cadiz by the Royal Navy, which comprised the siege and the shelling of the city as well as an amphibious assault on the port itself from June to July 1797. After the battle of Cape Saint Vincent the British fleet led by Lord Jervis and Sir Horatio Nelson had appeared in the Gulf of Cadiz. During the first days of June the city was bombarded, but causing slight damage to the Spanish batteries, navy and city. Nelson's objective was to force the Spanish admiral Jose Mazarredo to leave the harbour with the Spanish fleet. Mazarredo prepared an intelligent response and the Spaniards began to build gunboats and small ships to protect the entrance of the harbour from the British. By the first days of July, after a series of failed attacks led by Rear-Admiral Nelson, and with the British ships taking huge fire from the Spanish forts and batteries, the British withdraw and the siege was lifted.