The Spanish Blue Division faced a major Soviet attempt to break the siege of Leningrad in February 1943, when the 55th Army of the Soviet forces, reinvigorated after the victory at Stalingrad, attacked the Spanish positions at the Battle of Krasny Bor, near the main Moscow-Leningrad road. Despite very heavy casualties, the Spaniards were able to hold their ground against a Soviet force seven times larger and supported by tanks. The Soviet assault was contained by the Blue Division and the siege of Leningrad continued for another year.