Action of 15 July 1798 joining with a squadron of four Portuguese ships of the line under the command of Tomás Xavier Teles de Castro da Gama, Marquess de Niza. In September, Niza's squadron was ordered to join Nelson in his search for the French and sailed eastwards, but while passing to the north of Malta they encountered a large convoy of battered vessels under Captain Sir James Saumarez. These ships were seven British ships of the line and six captured French ships, all survivors of the Battle of the Nile, Nelson's successful conclusion of the campaign fought at Aboukir Bay off Egypt on 1
Action of 18 August 1798 Thompson had manning problems: casualties from the Battle of Santa Cruz de Tenerife in July 1797 had never been replaced, 14 men had been wounded in the battle at Aboukir Bay and two officers and fifty men had been detached to man the captured French prizes. This left Thompson with just 282 men on board "Leander". Following Nelson's orders, Thompson sailed on 5 August. After fleeing Aboukir Bay, Admiral Villeneuve had been delayed in the Eastern Mediterranean by northeasterly winds, and on 17 August he decided to split his forces, sailing for Malta with his flagship "Guillaume Tell" and the