11 October 1941
Russia : At Bryansk, Russia, enveloped Soviet 3rd and 13th Armies counterattacked positions held by troops of German Panzer Group 2 and broke through.
Baltic Sea : Soviet submarine ShCh-322 was lost in the Gulf of Finland to unknown reason; all 40 aboard were killed. She had most likely struck a mine.
Mediterranean Sea : Malta-based Royal Navy Fleet Air Arm Swordfish bombers of No. 830 Squadron attacked an Italian convoy 100 miles north of Tripoli, sinking Italian cargo ships Zena and Casaregis.
Moscow , USSR : Thousands fled Moscow, Russia based on rumors of an imminent German capture of the Soviet capital. To the west, the enveloped Soviet troops at Vyasma suffered a heavy artillery and air bombardment that caused heavy casualties.
Archangelsk , Kola Peninsula , USSR : Allied convoy PQ-1, consisted of eleven merchant ships escorted by seven British warships, arrived in Archangelsk, Russia. A second PQW convoy will be leaving from Iceland inbound to Russia at the end of week
12 October 1941
Leningrad : German 250th Infantry Division of Spanish volunteers was deployed on the River Volkhov near Leningrad, Russia.
Moscow Front : German Army Group Center captured Bryansk and Kaluga (a hundred miles of southwest of Moscow) in Russia. General Heinz Guderian noted in his diary that snow continued to fall amidst the campaign in the Soviet Union. Eight Soviet armies had been trapped and destroyed, and 648,196 men taken prisoner.
Baltic Sea : Soviet submarine S8 was lost off Ăland, Sweden in the Baltic Sea to unknown reason; all 48 aboard were killed. She presumably struck a mine.
North Sea : German motor torpedo boats S41, S47, S53, S62, S104, and S105 attacked Allied convoy FN531 just off the coast of East Anglia, England, United Kingdom, sinking small Britishcargo ship Chevington (9 killed) and Norwegian cargo ship Roy (3 killed).
Germany : After dark, 118 bombers from RAF Bomber Command took off to attack HĂźls and Bremen, Germany.
UK : After dark, German bombers attacked Manchester, Clayton, Denton, and Oldham in England, United Kingdom, causing generally light damage. 23 were killed at Oldham.
Atlantic Ocean : Porteguise cargo ship Corte Real was intercepted , torpedoed and sunk by German submarine U-83 off Oporto.