Vice-Admiral Sir Thomas Baker KCB was an officer of the Royal Navy, who saw service during the American War of Independence, and the French Revolutionary and Napoleonic Wars. He had obtained his own command during the French Revolutionary Wars and was to play a part in bringing about three of the battles of the Napoleonic Wars, the Battle of Copenhagen, the Battle of Trafalgar, and the Battle of Cape Ortegal. He only directly participated in the third, but his actions there, and the capture of the French frigate Didon (1805) beforehand brought him honours and rewards. While towing the Didon to a British port, he and another vessel were sighted by the combined Franco-Spanish fleet under Pierre-Charles Villeneuve, and mistaken as scouts for the Channel Fleet. He therefore turned south to Cadiz, leading to the abandonment of the planned invasion of England, and the destruction of the French fleet at Trafalgar by Horatio Nelson some months later. He rose through the ranks after the end of the wars with France, and was commander of the South America Station during Charles Darwin's voyage aboard HMS Beagle. He eventually died with the rank of vice-admiral in 1845 after a long and distinguished career.

The Battle of Cape Ortegal was the final action of the Trafalgar campaign, and was fought between a squadron of the Royal Navy and a remnant of the fleet that had been defeated earlier at the Battle of Trafalgar. It took place on 4 November 1805 off Cape Ortegal, in north-west Spain and saw Captain Sir Richard Strachan defeat and capture a French squadron under Rear-Admiral Pierre Dumanoir le Pelley. It is sometimes referred to as Strachan's Action.