The Strategic operations of the Red Army in World War II were major military events on the Eastern Front during the Second World War, commonly conducted by at least one Front or major part of its forces. The operations could be either defensive, offensive, a withdrawal, an encirclement, or a siege, always conducted by at least two Services of the armed forces, the ground forces and the air forces, and often included the naval forces. In most cases the strategic operations were divided into operational phases which were large operations in their own right. In very few cases the phases were tactical, such as those requiring amphibious landings.
In Soviet historiography, the Great Patriotic War (termed the Eastern Front by Germany and western historians) is divided into periods:
The war with Japan, the Campaign in the Far East including the Manchurian Strategic Offensive Operation, (9 August 1945–2 September 1945) is seen as a separate theater of operations from the Great Patriotic War.
During the course of the Second World War the Red Army carried out a number of different military operations. The scope of these operations, usually known by the major cities around which they took place, was usually termed "operational-strategic" or "strategic", depending on the scale. An "operational-strategic" operation was usually undertaken by at least a group of Armies or a single Front. A "strategic" operation usually demanded cooperation of several Fronts to achieve its objectives. In both cases the operations could last from a week to several months. Strategic operations were combined into seasonal campaigns, because weather and ground conditions affected planning.