Mediterranean campaign of 1793–1796 Jervis awaited an opportunity to return to the Sea, while his blockading squadrons under Nelson harassed the Spanish, including a failed assault on Cádiz in June, and the disastrous Battle of Santa Cruz in July at which Nelson lost an arm. It was not until the spring of 1798 and the attempt by a French army under Bonaparte to invade Egypt that a British fleet was able once more to enter the Mediterranean. In the Mediterranean campaign of 1798 a recovered Nelson tracked the French fleet and destroyed it at the Battle of the Nile, reasserting British naval supremacy in
French fleet at the Siege of Toulon the Battle of Genoa and another in July at the Battle of Hyères Islands. These engagements marked the only encounters between the British fleet and the French fleet they so briefly held before the Royal Navy was forced to withdraw from the Mediterranean by the 1796 Treaty of San Ildefonso at which the Spanish changed sides, allying with France against Britain. "The ships in the orders of battle below are listed by class and then approximately grouped by their positions on 18 December 1793. Note that although the Rating system for ships of the line was a Royal Navy measure,