Communication lines between Army Group North and Army Group Centre were permanently severed, and the former was relegated to an occupied Baltic seashore area in Latvia. On 25 January, Adolf Hitler renamed Army Group North to Army Group Courland implicitly recognising that there was no possibility of restoring a new land corridor between Courland and East Prussia. The Red Army commenced the encirclement and reduction of the Courland cauldron which retained a possibility of being a major threat, but were able to focus on operations on its northern flank that were now aiming at East Prussia. Operations by the Red Army against the Courland Pocket continued until the surrender of the Army Group Courland on 9 May 1945, when close to 200,000 Germans were taken prisoner there.