martin did not take the french fleet to sea again during the campaign. instead, he detached raiding squadrons against british commerce. firstly he sent richery's expedition into the atlantic, where it attacked and badly damaged a valuable british convoy from the levant before sheltering in the spanish port of cádiz. spain, under pressure from french victories in the war of the pyrenees, had agreed a peace treaty with france on 19 august. a british force under mann sent in pursuit of richery instituted a blockade of the port. a second squadron, ganteaume's expedition, attacked british commerce in the aegean sea before returning to toulon ahead of a pursuit squadron under captain thomas troubridge. hotham remained with his main fleet at san fiorenzo and leghorn, sending forces to harass french coastal convoys supporting the italian campaign; a squadron under nelson destroyed large french supply convoy at alassio on 26 august, and hms "southampton" fought an inconclusive engagement with a french convoy off genoa on 29 september.