Copy of the proceedings of a general court martial, held at the Horse-Guards, for the trial of Colonel Hugh Debbieg, of the Corps of Royal Engineers; on three charges, exhibited against him, by Charles, Duke of Richmond, &c. Master General Of His Majesty's Ordnance. To Which IS Added, Copies of the Opening of the Charges, and of the Reply to the Defence, as delivered by the Duke of Richmond at the Trial; of which only short Minutes were entered in the Proceedings of the Court Martial. Also, The Sentence; As directed, by His Majesty, to be issued in General Orders.