HMS Emerald (1795) dispatched a squadron of five ships, including "Emerald" and commanded by Nelson in the 74-gun , to locate a large invasion fleet that had left Toulon. After receiving intelligence on 22 May, Nelson correctly predicted the French fleet's destination and set course for Alexandria where the British captured or destroyed all but two of the French ships at the Battle of the Nile, which occurred between 1–3 August 1798. "Emerald" missed the battle; having previously become separated from the rest of the squadron in a storm on 21 May, she arrived at Aboukir Bay on 12 August. When Nelson left
Campaigns of 1799 in the French Revolutionary Wars laid siege to Acre, and defeated an Ottoman effort to relieve the city at the Battle of Mount Tabor on 17 April. However, his repeated assaults on Acre were driven back by Ottoman and British forces under the command of Jezzar Pasha and Sir Sidney Smith. By May, with plague rampant in his army and no sign of success against the city, Napoleon was forced to retreat into Egypt. In July, Turkey, with the help of the British navy, mounted an invasion by sea from Rhodes. Napoleon attacked the Turkish beachheads and annihilated their army at Aboukir. In August-September, after