for the Soviets tallied 17 aircraft destroyed and 70 crewmen killed. On 7 November 1941, Sir Richard Peirse, head of RAF Bomber Command, launched a large raid on Berlin, sending over 160 bombers to the capital. 21 were shot down or crashed, and again little damage was done due to bad weather. This failure led to the dismissal of Peirse and his replacement (in February 1942) by Sir Arthur Travers Harris, who believed in both the efficacy and necessity of area bombing. Harris said: "The Nazis entered this war under the rather childish delusion that they were going to bomb everyone else, and nobody was going to bomb them. At Rotterdam, London, Warsaw, and half a hundred other places, they put their rather naïve theory into operation. They sowed the wind, and now they are going to reap the whirlwind."At the same time, new bombers with longer ranges were coming into service, particularly the Avro Lancaster, which became available in large numbers during 1942. During most of 1942, however, Bomber Command's priority was attacking Germany's U-boat ports as part of Britain's effort to win the Battle of the Atlantic. During the whole of 1942 there were only nine air alerts in Berlin, none of them serious. Only in 1943 did Harris have both the means and the opportunity to put his belief in area bombing into practice. The Battle of Berlin The Battle of Berlin was launched by Harris in November 1943, a concerted air campaign against the German capital, although other cities continued to be attacked to prevent the Germans concentrating their defences in Berlin. Harris believed this could be the blow that would break German resistance. "It will cost us between 400 and 500 aircraft," he said. "It will cost Germany the war." By this time he could deploy over 800 long-range bombers on any given night, equipped with new and more sophisticated navigational devices such as H2S radar. Between November 1943 and March 1944, Bomber Command made 16 massed attacks on Berlin. A prelude to the 1943 raids came from the De Havilland Mosquito, which hit the capital on January 30, 1943, the tenth anniversary of the Nazis' Machtergreifung. That same day, both Göring and Goebbels were known to be giving big speeches that were to be broadcast live by radio. At precisely 11.00 am, Mosquitoes of No. 105 Squadron arrived over Berlin exactly on time to