Western Front: New French Nieuport 11 fighter begins entering service with Esc N3.
25 Royal Flying Corps aircraft attack Douai airfields and Le Sars stores dump (16 aircraft repeat the attack on January 17).
Champagne: Violent German bombardment and attack between Hill 304 and Tahure.
Belgium: King Albert asks what are Berlin’s guarantees for postwar Belgium if she renounces neutrality.
Britain: Asquith introduces Military Service Bill (conscription). TUC oppose following day.
Germany: Dresden Industrial War Board formed for employers and unions.