北方軍集団
On 17 January 1942, Küchler succeeded Field Marshal Wilhelm Ritter von Leeb as commander of Army Group North after the latter was relieved of command. Küchler commanded Army Group North from December 1941 through January 1944, maintaining the siege of Leningrad. On 30 June 1942 Hitler promoted Küchler to "Generalfeldmarschall".