Atlantic: Italian submarine Pietro Calvi sinks 5 ships off northeast coast of Brazil (March 25 – April 12).
Britain – Grantham by-election: Kendall (lndependet ‘Production for Victory’ Candidate), 11,758; Air Chief Marshal Longmore (Conservatives), 11,391. First seat lost by Government since by-election ‘truce’ began in September 1939 (in numerous cases Cons., Lab. or Lib. candidates have been returned unopposed).