Somme: 3 BEF Fifth Army divisons (3,800 casualties) gain 500-1000 yards with 773 PoWs in two attacks at Miraumont north and south of the Ancre (night February 17-18).
Alsace: French raid on German salient northeast of Altkirch causes heavy loss.
Albania: French and Italian troops link up at Herseg making 240-mile Allied front from Adriatic to Aegean.
Mesopotamia: 7th Indian Div (over 500 casualties) fails and panics in attack on Turk Sannaiyat north bank position with 3,000 enemies.
Atlantic: Torpedoed Q-ship Farnborough (Campbell wins Victoria Cross) sinks U-83 (Hoppe), 2 survivors, off southwest Ireland with 25 shots at 300 yards.