The Fourth Army is a military formation that has been part of various national armies, most notably during World War I and World War II. It was established to organize and command troops in specific regions, often playing a crucial role in major battles. The Fourth Army typically consists of several divisions and support units, allowing for coordinated operations on the battlefield. In the context of World War I, the Fourth Army of the German Empire was involved in significant campaigns, including the Battle of Verdun. In World War II, the Soviet Fourth Army participated in key operations on the Eastern Front, contributing to the overall efforts against the Nazi Germany forces.