The Eastern Army refers to a military formation that operates in the eastern region of a country or territory. It is typically responsible for defending borders, conducting operations, and maintaining peace in its designated area. The structure and size of the Eastern Army can vary based on the nation's defense strategy and geopolitical needs. In many countries, the Eastern Army may collaborate with other branches of the military, such as the Air Force and Navy, to ensure comprehensive security. It may also engage in joint exercises with allied forces to enhance readiness and interoperability in case of regional conflicts or humanitarian missions.