Air Operations, Europe

In the first air attack on British territory, 9 new German Ju-88 dive-bombers attack British ships in the Firth of Forth. Damaged are cruisers Southampton and Edinburgh and the destroyer Mohawk.

Battle of the Atlantic

The French destroyer Cyclone sinks U-45 in the Bay of Biscay.

Western Front

German forces push the French back to the Maginot Line near Saarbrücken.