The famous British naval commander at the Battle of Trafalgar was Admiral Horatio Nelson. The battle, fought on October 21, 1805, during the Napoleonic Wars, was a decisive naval engagement between the British Royal Navy and the combined fleets of France and Spain. Nelson's innovative tactics, including the use of a daring and unconventional battle formation, led to a significant British victory, ensuring naval dominance and thwarting Napoleon's plans for invading Britain. Tragically, Nelson was mortally wounded during the battle, but he became a national hero, celebrated for his naval prowess and leadership.