The summer of 1810 saw a campaign against the French Indian Ocean possessions. The British captured the Île Bourbon (Réunion) in July. In August, they turned their attention to Mauritius, where they attempted to land troops to destroy coastal batteries and signals around Grand Port. The attempt turned sour, however, when two French forty-gun frigates, "Bellone" and "Minerve", the 18-gun corvette "Victor", and two East Indiaman prizes entered the harbour and took up defensive positions at the head of the main entrance channel. The French also moved the channel markers to confuse the British approach.