July 1942, Maclean returned to No.41 Squadron upon receiving promotion to Flight Lieutenant (FLTLT) and several months later took part in Operation Jubilee on 19 August; an allied raid on the German occupied French port of Dieppe.
July 1942, Maclean returned to No.41 Squadron upon receiving promotion to Flight Lieutenant (FLTLT), taking part in numerous sorties including defensive patrols of Britain and offensive attacks on the German occupied France. Several months later he took part in Operation Jubilee on 19 August; an allied raid on the German occupied French port of Dieppe.