What was Army Group North's objective during Operation Barbarossa?

During Operation Barbarossa, Army Group North, commanded by General Wilhelm von Leeb, was tasked with advancing from East Prussia through the Baltic states toward Leningrad (now St. Petersburg).1

By early September 1941, these forces had approached the city from the west and south, eventually contributing to the Siege of Leningrad, which resulted in the city being almost completely encircled and cut off from vital supply lines by November 1941. As winter approached, Adolf Hitler ultimately halted the northward drive of the army group on the outskirts of the city.23