 He received command of the fort at West Point and plotted to hand it over to the British, only to flee into the British lines when the capture of his contact John Andre led to the exposure of the plot.Arnold went on to serve under William Phillips, the commander of Burgoyne's right wing, in a 1781 expedition into Virginia.Although he left the direction of the battle to subordinates, General Gates received a great deal of credit as the commanding general for the greatest American victory of the war to date.