16. Battle of Trafalgar, A.D.1805. This was nelson’s most brilliant victory over the combined French and Spanish fleets. It ensured British naval supremacy, ending Napolean’s hoped of invading England. Nelson was killed in this battle. 17. Battle of Austerlitz, A.D.1805. Emperor Napolean I with 65,000 French troops defeated an 83000 strong Austro-Russian army under themore..