Who was unsuccessful in his plot to relieve general George Washington of his military command?

The individual who was unsuccessful in his plot to relieve General George Washington of his military command was Major General Benedict Arnold. Arnold, a former hero of the Continental Army, conspired to surrender West Point to the British in 1780 but was discovered before the plan could be executed. His betrayal was motivated by a combination of personal grievances and financial difficulties, ultimately leading him to defect to the British side.