part of 357-strong force. Incendiaries started fires that were visible from 47 miles (75 kilometres) away. The air fleet was involved in attacks on Liverpool (324 bombers). Over 20–22 December 205 and 299 bombers struck the city. The bombing, on targets such as Liverpool, were not followed up the next night, giving the city, inhabitants and defences time to recover. Ministry of Home Security Herbert Morrison warned that morale in the city might crumble under sustained bombing—he did report 39,126 grt of shipping had been sunk, 111,601 grt damaged. Half the berths were out of action and unloading capacity was reduced by 75 percent. In December 1940 Sperrle's air groups flew 2,750 bombing operations against British cities, more than the 700 flown by Kesselring's command. Manchester—in close proximity to Liverpool—was first bombed in December 1940, beginning the Manchester Blitz. From 22 to 24 December Manchester was bombed on two successive nights by 270, then 171 bombers. Northern targets were expanded to include participation in the Sheffield Blitz. On 12 December the bombing of the city opened with attacks by 336 aircraft then a further 94 two days later. The bombing was carried out over the course of nine hours, destroying much of the city. London remained a primary objective. On the night of 9 December 1940, for example, 413 bombers hit the capital and on 29 December the bombing caused what became known as the Second Great Fire of London. On this night alone Sperrle's air fleet dropped 27, 499 incendiaries. It was not the heaviest raid on London—136 aircraft—but it was the most destructive. On 24 November 1940 148 of Sperrle's bombers began the Bristol Blitz. Around 12,000 incendiary bombs and 160 tons of high-explosive bombs were dropped. Park Street destroyed and the Bristol Museum hit. 207 people were killed and thousands of houses were destroyed or damaged. The city was targeted again on 3/4 January 1941. 30 air raids were carried out against Bristol according to wartime British sources. Approximately a little over 1,000 people were killed in the attacks. By January 1941, Luftflotte 3 had been reorganised. I. Fliegerkorps under Generaloberst Ulrich Grauert remained with Sperrle, but he was given two further air corps—VI. Fliegerkorps under Generalleutnant Kurt Pflugbeil and V. Fliegerkorps under General Greim was retained; eight bomber wings provided the striking power of Sperrle's air fleet. In February 1941 bad weather limited Sperrle to 975