The 2nd Army is a military formation that has been used by various countries throughout history. It typically consists of multiple divisions and support units, organized to conduct large-scale operations. The structure allows for flexibility in command and coordination during military campaigns. In the context of World War II, the 2nd Army played significant roles in various theaters of war, including the European front. It was involved in key battles and operations, contributing to the overall efforts of the Allied forces against the Axis powers.