The strategic operations of the Red Army in World War II were major military events carried out between 1941 and 1945 on the Eastern Front or in 1945 in the Far East during the Second World War. Such operations typically involved at least one Front – the largest military formation of the Soviet Armed Forces. The operations could be 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 Stavka divided the strategic operations 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.