The Circus offensive in 1942 succeeded in putting Sperrle's air defences under pressure. Fighter Command flew 43,339 daylight sorties over Western Europe, with Bomber Command's 1,794. The largest single air battle occurred on 19 August 1942 during the Dieppe Raid. "Luftflotte" 3's units won a significant victory over Fighter and Bomber Command. They lost 106 aircraft; the Germans lost only 48 aircraft destroyed and 24 damaged. At the end of 1942, Leigh-Mallory replaced Douglas as AOC Fighter Command. The two men had presided over the loss of 587 fighters while Sperrle lost 108 through the year. The British losses were equivalent to 30 squadrons.