25 May 1940
The last French defenders of Boulogne surrender.
RAF Coastal Command bombs oil tanks at Rotterdam
Lord Gort, the commander of the BEF, decides to withdraw to the coast and attempt to evacuate his army (Operation Dynamo)
Heavy fighting continues at Calais. That evening Churchill decides not to withdraw the British force from Calais.
War in the Air
Luftwaffe aircraft bomb targets in the North Riding of Yorkshire and East Anglia
The War at Sea, 1939-1945, Volume I: The Defensive, S. W. Roskill
. This first volume in the British official history of the war at sea covers the period from the outbreak of the war through to the first British disasters in the Pacific in December 1941. Amongst other topics it covers the Norwegian campaign, the evacuation from Dunkirk and the first two years of the Battle of the Atlantic. The text is meticulously researched, and is rooted in a detailed study of wartime records, both British and German. [see more
How to cite this article: Rickard, J (28 December 2007), 25 May 1940, http://www.historyofwar.org/secondworldwar/date/1940_05_25.html