On 27 August the Leningrad Front began a full-scale counterattack against the XXXXI Panzer Corps at Mga. ZG 27 fought with the 7 IAK and 5 IAP regiments in "violent aerial clashes." Three Bf 110s were claimed by these fighter units, but German losses are unstated. On 29 August 35 IAP joined the battle and claimed two more Bf 110s. German losses are again unstated. II./ZG 26 supported I./KG 77 and elements of JG 54 and KGr 806 in Operation Beowulf, a seizure of Soviet-held islands in the Baltic. On 6 September ZG 26 attacked the airfield at Kagul and destroyed eight aircraft; the operation was successful. ZG 26 reverted to supporting the Siege of Leningrad in September. On 19 September it supported the largest and most lethal bombing attacks to date as 442 people were killed. The wing reported one crew lost. In late September, ZG 26 was moved back to Luftflotte 2, as part of Fliegerkorps VIII. The wing was ordered to provide close air support for Operation Typhoon, the Battle of Moscow.