Western Front
First DH4 fast, high-flying S/E bombers [ed note: I think this is a typo, referring to De Haviland light bombers: the S/E series were Royal Aircraft Factory products, the “S E” standing for Scouting Experimental] with first Constantinesco cc MG synchronizing gear (6,000 issued to December) join No 55 Squadron Royal Flying Corps. Wikipedia has this to say about No 55 Squadron: No. 55 Squadron was formed at Castle Bromwich on 27 April 1916. It initially operated as a training unit, flying a mixture of types, including the Avro 504, Royal Aircraft Factory B.E.2 and the Armstrong Whitworth F.K.8, but in January 1917 it changed its role to a day-bomber squadron and re-equipped with the Airco DH.4, being the first squadron to receive the new light bomber.
Despite a blizzard, fighting continues in Verdun, with French forces successfully defending their trenches from German attacks.
British line extends south of Somme to neighbourhood of Reims, twice the length of a year before.
Eastern Front
Night attack on German positions south of Brzezany fails.
Asiatic and Egyptian Theaters
Mesopotamia: British occupy Lajj and Ctesiphon.
British cavalry 14 miles from Baghdad.
Members of the 1st Australian Wireless Signal Squadron on horseback during their advance on Baghdad:
http://imgur.com/WXUb4lH
Political, etc.
Germany: 250 British PoWs entrain at Minden to work in Ruhr coal mines (2,000 Allied PoWs there already).
German Reichstag budget committee unanimously approves Zimmermann’s attempts to secure an alliance with Mexico against the U.S.
Russia: Food riots in Petrograd continue.
France: Paris is suffering from a potato shortage, and French women are urged to grow potatoes and other foodstuffs instead of flowers.
United Kingdom: Controller of Potatoes appointed. Army Demobilization Trades Register begun.
United States: 18,000 soldiers parade past President Wilson (picture is incorrectly labeled March 4th):
http://imgur.com/0jm9cum
U.S. Supreme Court decides
S S Appam case in favor of British owners.