In Britain… The British Royal Navy starts laying a mine barrier from the Moray Firth to the Thames Estuary. Meanwhile, the first contingent of the Royal Australian Air Force reaches port in Pembroke, Wales.

In the Winter War… Soviet forces continue attacks on the north end of the Mannerheim Line with little success. There are heavy Soviet losses of men and material. Finnish forces hold their positions on the outskirts of Salla.

In Sweden… Military reservists are called up.