At a General Court Martial whereof Coll Tupper was President (10th March 1778) Lieutt Enslin of Coll Malcom’s Regiment tried for attempting to commit sodomy, with John Monhort a soldier; Secondly, For Perjury in swearing to false Accounts, found guilty of the charges exhibited against him, being breaches of 5th Article 18th Section of the Articles of War and do sentence him to be dismiss’d the service with Infamy—His Excellency the Commander in Chief approves the sentence and with Abhorrence & Detestation of such Infamous Crimes orders Lieutt Enslin to be drummed out of Camp tomorrow morning by all the Drummers and Fifers in the Army never to return; The Drummers and Fifers to attend on the Grand Parade at Guard mounting for that Purpose.
https://founders.archives.gov/documents/Washington/03-14-02-0138
Nice find. Are there similar documents for the times when Washington ordered the execution of deserters?