The Blue Division was trained in Germany before serving in the Siege of Leningrad, and notably at the Battle of Krasny Bor, where General Infantes' 6,000 Spanish soldiers threw back some 30,000 Soviet troops. In August 1942, it was transferred north to the southeastern flank of the Siege of Leningrad, just south of the Neva near Pushkin, Kolpino and Krasny Bor in the Izhora River area. After the collapse of the German southern front following the Battle of Stalingrad, more German troops were deployed southwards. By this time, General Emilio Esteban Infantes had taken command. The 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 assault was contained and the siege of Leningrad was maintained for a further year. The division remained on the Leningrad front where it continued to suffer heavy casualties owing to weather and enemy action. In October 1943, with Spain under severe diplomatic pressure, the Blue Division was ordered home leaving a token force until March 1944. In all, about 45,000 Spaniards, mostly committed volunteers, served on the Eastern Front, and around 4,500 died. Joseph Stalin's desire to retaliate against Franco by making an Allied invasion of Spain the first order of business at the Potsdam Conference in July 1945, was not supported by Harry S. Truman and Winston Churchill. War weary and unwilling to continue the conflict, Truman and Churchill persuaded Stalin to settle instead for a full trade embargo against Spain.