On 23 April 1942 the Baedeker offensive began with the Exeter Blitz and the Bath Blitz and extended west to Norwich. KG 2 carried the burden of campaign. In the Bath operation Sperrle's pilots flew at only 600 ft (180m) to magnify the damage. York became a target and the cities suffered as German crews flew several missions per night. The offensive was halted on 9 May. Sperrle's bombers had suffered a 5.3 percent loss rate in 716 missions. 38 bombers were lost. Bombing operations continued upon the cessation of Baedeker against Birmingham in July and Cantebury. "Luftflotte" 3 flew 2,400 night bomber sorties against Britain in 1942 and lost 244 aircraft; a loss rate of 10.16 percent. During the course of the operations, Sperrle's wing commanders were forced to draw upon increasing numbers of instructor pilots—IV./KG 55, for example, lost a quarter of them. Overall, Sperrle's air fleet flew 7,039 bombing operations and dropped 6,584 tons of bombs.