 Second U.S. Army supported multi-purpose missions of command, operations, training and provisions of administrative and logistical services to ensure the continued operational readiness of its assigned combat and support units in the active Army, Army Reserves and National Guard.At the height of the Cold War, Second U.S. Army helped mobilize forces for potential conflict.During the September 1961 Berlin Crisis, Second U.S. Army mobilized 39 National Guard and Army Reserve units in the seven state area and eight Army Reserve units from other Army areas.