A stray shot carried away the American's flag halyard, and the British captain, hoping the madness was finally over, called into the darkness, "Sir! Have you struck?"
The American commander looked around him; his ship was on fire, and sinking; he had only one functional cannon left. He shouted back, "No Sir, I have not yet begun to fight!"
And when the sun came up, the (formerly English) "Serapis" sailed off under the American flag, with John Paul Jones on the quarterdeck.
From the "Divine Madness" file...