In one of the most famous crimes of post-Revolution America, Barnett Davenport commits a mass murder in rural Connecticut. Caleb Mallory, his wife, daughter-in-law, and two grandchildren were killed in their home by their boarder, Davenport. It would contribute to a change in the way the young nation views crime and criminals.

After a siege that began on April 2, 1780, Americans suffer their worst defeat of the revolution on May 12, 1780, with the unconditional surrender of Major General Benjamin Lincoln to British Lieutenant General Sir Henry Clinton and his army of 10,000 at Charleston, South Carolina.

On May 29, 1780, the treatment of Patriot prisoners by British Colonel Banastre Tarleton and his Loyalist troops leads to the coining of a phrase that comes to define British brutality for the rest of the War for Independence: “Tarleton’s Quarter.”

On September 21, 1780, during the American Revolution, American General Benedict Arnold meets with British Major John Andre to discuss handing over West Point to the British, in return for the promise of a large sum of money and a high position in the British army. The plot was foiled and Arnold, a former American hero, became synonymous with the word “traitor.”

British spy John André is court-martialed, found guilty and sentenced to death by hanging on September 29, 1780. André, an accomplice of Benedict Arnold, had been captured by Patriots John Paulding, David Williams and Isaac Van Wart six days earlier on September 23, after they found incriminating papers stashed in his boot.

Thirty-year-old British Major John Andre is hanged as a spy by U.S. military forces in Tappan, New York, on October 2, 1780.

During the American Revolution, Patriot irregulars under Colonel William Campbell defeat Tories under Major Patrick Ferguson at the Battle of King’s Mountain.

A force of Continental dragoons commanded by Colonel William Washington–General George Washington’s second cousin once removed–corners Loyalist Colonel Rowland Rugeley and his followers in Rugeley’s house and barn near Camden, South Carolina, on December 4, 1780.