War Diary WW2 for Monday, December 4, 1939:
Battleship HMS Nelson, flagship of British Home Fleet, damaged by magnetic mine near Loch Ewe.
Royal Navy S class sub Salmon sinks U-boat U-36 off Norway.
King George arrives to inspect BEF and RAF units. He later meets President Lebrun, Premier Daladier and General Gamelin and sees Maginot Line (visit ends, December 10).
Finland: Finns fortify Aaland Islands in Gulf of Bothnia.
USSR rejects Swedish offer of mediation in Russo-Finnish conflict.