Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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.