The Battle of Copenhagen took place on April 2, 1801, during the Napoleonic Wars. It was fought between the British Royal Navy, commanded by Admiral Horatio Nelson, and the Danish-Norwegian fleet. The British aimed to neutralize the threat posed by Denmark's alliance with France and to secure control over the Baltic Sea. The battle involved a significant naval engagement in the harbor of Copenhagen. The British forces used a combination of ships and bomb vessels to bombard the city and its defenses. Ultimately, the British victory led to the signing of the Convention of Copenhagen, which temporarily ended hostilities between Britain and Denmark.