Western Front
Germany: Germans introduce new ultrasecure 5-letter field cipher for “Ludendorff” Offensive, but French (Painvin) first solve c. April 4, break it on April 26; by May 29 only two-day delay in reading it.
Flanders: Belgian counter-attack north of Pervyse.
Eastern Front
Germans land on Aaland Islands at request of Finnish Government. The islands are now occupied by Finnish, Swedish, Russian, and German troops.
Northern Russia: 130 Royal Marines land at Murmansk (French cruiser
Amiral Aube arrives at Royal Navy request on March 19).
Latvia: Erich von Falkenhayn (from Palestine) takes command of German Tenth Army for duration of war.
Southern Front
American Red Cross members gives out gifts to Italian soldiers in the frontline trenches in Italy:
https://twitter.com/CenturyAgoToday...638836148695041
Political, etc
Russia: The Soviet Russian government moves its capital from Petrograd to the more defensible city of Moscow.
United Kingdom: Sir Eric Geddes reviews shipping situation in House of Commons.
Romania: Preliminary treaty of peace between Romania and the Central Powers, Bulgaria and Turkey signed at Buftea (see December 9th, 1917, and February 25th and May 7th, 1918). Dobruja ceded; Hungarian frontier to be ‘rectified’; 8 divisions to demobilize at once; Rumania to help Central Powers’ march on to Odessa and grant German trade privileges.
Romanian Prime-Minister Alexandru Marghiloman signing the treaty:
https://i2.wp.com/ww2-weapons.com/w...arest.jpg?ssl=1
Finland: Carl Mannerheim cables Ludendorff, thanks Kaiser for weapons and insists on Finn command of German troops and non-interference (Hindenburg agrees on March 10).