After capturing Washington, the British attacked what city, which they failed to capture?

Port Dover

Explanation:

After capturing Washington DC in 1814 they attacked Port Dover but they failed.

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).