 In the lead up to the Battle of Normandy and the D @-@ Day landings Johnson continued to score regularly . His 22 — 23rd victories were achieved on 25 April 1944 and Johnson became the highest scoring ace still on operations . These victories were followed by another Fw 190 on the 5 May ( no . 24 ) ; III . / JG 26 lost Feldwebel Horst <unk> and Unteroffizier Manfred <unk> killed during the air battle . After the landings in France on 6 June 1944 , Johnson added further to his tally , claiming another five aerial victories that month including two Bf 109s on 28 June . The mission in which Johnson recorded his 26th victory on 22 June was particularly eventful ; four more Fw 190s fell to his wing . After bouncing a formation of Bf 109s and Fw 190s , he shot down a Bf 109 for his 29th victory . Five days later , Johnson destroyed two Fw 190s to reach his 30 — 31st air victories . 
