The Pershing Operational Test Unit (POTU) was the U.S. Army agency responsible for the operational testing of the Pershing 1 Field Artillery Missile System, the Pershing 1a Field Artillery Missile System and the Pershing II Weapon System. Created in 1965, POTU was assigned to United States Army Europe and located in Heidelberg, Germany. Personnel consisted of one lieutenant colonel, two majors, one captain, two warrant officers and four non-commissioned officers.