Western Front
Aerial picture of the trenches and soldiers on the Somme front:
http://imgur.com/VBvfKn8
Eastern Front
Russia claims that in 1916, it captured 428,000 soldiers, 325 artillery guns, 1,661 machine guns, and 421 mortars and mine throwers.
Romania: Battle of Pralea: Further unsuccessful Romanian attacks between Casin and Susitsa valleys. Town of Nanesti and bridgehead of Fundeni carried by Makensen’s forces.
Southern Front
Kaiser Wilhelm at the Citadel in occupied Belgrade, the 1st German emperor to visit since Friedrich I Barbarossa
http://imgur.com/vU1VRxu* © IWM (Q 27202)
Asiatic and Egyptian Theaters
Mesopotamia: 3rd Indian Division has cleared Khadalri Bend (south bank of Tigris below Kut); for 1,639 casualties since January 9.
Political, etc.
Germany: German Government send instructions to German Minister in Mexico (von Eckhardt) to negotiate alliance with Mexico and Japan against the United States (see February 28th). This is the infamous Zimmermann Telegram, which perhaps even more than unrestricted submarine warfare, brought the US into World War I.
https://en.wikipedia.org/wiki/Zimmermann_Telegram and
https://www.ourdocuments.gov/doc.ph...page=transcript
United Kingdom: Silvertown (East London) munitions factory explosion (69 killed, 400 injured), heard in Salisbury, Wilts.
https://i0.wp.com/ww2-weapons.com/w...Muni-Fabrik.jpg (Ed note: uncertain if this is the particular munitions factory in question).