USA HISTORY

Detailed explanation-1: -In 1779, Arnold was appointed commander of the American fort at West Point, New York. But by the end of 1779, Arnold had begun secret negotiations with the British to surrender, in return for money and a command in the British army.

Detailed explanation-2: -Although cleared of a court-martial, Arnold was rebuked by Washington, who called his conduct “imprudent and improper.” Arnold resigned his post in Philadelphia and eventually gained command at West Point where he entered into secret negotiations with the British.

Detailed explanation-3: -Arnold probably did not leave Philadelphia for West Point until after July 21. Nevertheless, in this letter Arnold offered to surrender West Point for 20, 000 pounds. Because of delays in communication, Arnold did not know that his offer to surrender West Point had been accepted until August 24, 1780.

Detailed explanation-4: -Arnold was already a known commodity, as both a brave soldier and a malcontent, when he took command of West Point on August 3, 1780.