The battle that followed was one of the most dramatic ever fought by the Royal Navy. The waters over which the opposing fleets contended were to be immortalised twenty-five years later when Nelson was to conquer and die off Cape Trafalgar, but the night action of the 16th/17th January 1780 was to be known by no geographical name.

In an age when admirals were absolutely bound, upon pain of death, to the tactical concept of the unbroken line ranged against that of the enemy, Rodney's unleasing of his ships was an innovation of the utmost importance, and the manner of its doing in that wild Moonlight Battle was an act of daring unsurpassed by sailing warships in such large numbers.

Tregembo had been right. An hour after Bedford's sighting of eleven Spanish battleships and two frigates the sky had clouded over. The wind backed westerly and began to freshen.

At Bedford's signal Rodney had thrown out the 'General Chase' to his warships. Each captain now sought to out-do the rest and the vessels fitted with the new copper bottoms forged ahead. The two-deckers Defence, Resolution and Edgar began taking the lead. Officers anxiously checked their gear as captains, reckless as schoolboys, held on to sail. Still the wind rose. Telescopes trained with equal anxiety on the Spaniards who, faced with such overwhelming odds, turned away to leeward and the shelter of Cadiz.