What was british 1st major victory?

The British Army's first major victory during the Napoleonic Wars was the Battle of Trafalgar, fought on October 21, 1805. In this naval engagement, Admiral Horatio Nelson led the British fleet to a decisive victory against the combined French and Spanish fleets. The battle secured British naval dominance and effectively ended Napoleon's plans to invade Britain. Nelson's tactics and leadership were pivotal in achieving this significant victory.