Western Front
Germans capture Brest naval base, and begin crossing river Loire on broad front. Cadets of Saumur Cavalry School under Colonel Michon prevent German 1st Cavalry Division from crossing Loire.
Air War
Italian aircraft raid Bizerta. Germans bomb Bordeaux: 63 killed, 180 injured (night June 19-20).
Sea War
19,000 Polish and British troops evacuated from Bayonne and St Jean-de-Luz, near Franco-Spanish border (operation completed June 25).
Home Fronts
Britain: Children’s Overseas Reception Board established to send 20,000 schoolchildren to the Dominions for the duration of the war.