German Army ration strength 5,029,672 men.
Germany: U-boats sink 29 ships (161 British lives lost) worth 89,517t in March, more than in whole war to date.
Austria: Admiral Haus defends Austria’s defensive naval strategy in long memo to ex-PM Baron Beck, ‘in many cases not to do anything is the only correct thing’, recognizes U-boats as ‘masters of the sea’. Francis Joseph approves on April 7.
Britain: Armaments Output committee to organize skilled labour.
Russia: Transport Ministry created.
France: Absinthe Prohibition law.