Western Front
British attack takes trenches on 3/4-mile front northeast of Beaumont Hamel, (Somme sector). Fifth Army operations on Ancre until March 13 involve Anzac and 3 other corps (11 divisions).
Eastern Front
Baltic Provinces: Battle of the Aa: Russian drive near Riga have advanced around 2 km and have captured 32 heavy and light artillery guns from the Germans.
Romania: “Thousands” (ed note: not trying to minimize the suffering, just completely unsure of how many thousands) of Romanian refugees die along the road in Bessarabia due to severe weather, while all able-bodied males are conscripted into the army.
Central Powers carry two heights in Oitoz valley (Moldavia), but are thrown back across the Putna north of Focsani.
Asiatic and Egyptian Theaters
Sinai: The entire Sinai Peninsula is now back in Allied hands. New Zealand cavalry at the Sinai & Palestine border post:
http://imgur.com/AqmkBpc
Mesopotamia: British progress continued north-east of Kut.
Naval and Overseas Operations
Channel: First Anglo*-French collier convoy sails (up to 45 colliers with 3 or 4 trawler escorts); only 5 of 2.600 lost by April 30.
Political, etc.
Entente Governments send joint reply to President Wilson's Note. Allied war aims outlined (see December 18th, 1916).
Russia: The new Premier of Russia Golitsyn declares there will be no internal reforms during the war.
Australia: Relatives and friends give farewells to Australian soldiers as they leave Brisbane:
http://imgur.com/31I65tb
Belgium: Belgian Government reply, to President Wilson's Note placing themselves in hands of Allies (see December 18th, 1916 and September 15th, 1918).
United States: German San Francisco Consul-General and 4 employees found guilty of conspiracy to sink arms ships. Von Bernstorff cables Zimmermann war inevitable if U-boats unleashed.
Greece: Evasive reply by Greek Government to Allies' ultimatum.