On the night of the 16/17 November 1940 13 He 111s of II./KG 55 led 159 bombers from "Luftflotte" 2 and 3 in an attack on Southampton destroying much of the city. 13 Heinkels of the group also led an attack on Birmingham on 19/20 November. They flew in the lead of 357 aircraft with "KGr" 100 joining in marking the target. The attack with incendiaries started fires that were visible from 47 miles (75 kilometres) away. The unit also guided 204 bombers to Birmingham on 21/22 November using 11 aircraft. Southampton was attacked by 121 bombers on 23/24 November and II./KG 55 was once again asked to lead the attack. On 27/28 November KG 55 was involved in the attack on Liverpool (324 bombers) and the continued air offensive against London (335 aircraft) on 28/29 November. On the last night of the month, Southampton was struck by 128 aircraft on 30 November/1 December 1940. III./KG 55 was involved in all of these operations.