Compulsory service for married as well as single men between 18 and 41 becomes law in Great Britain, to take effect from June 24.
The Germans win successes at Verdun and Vimy.
Italy:—Bettale is taken by the Austrians.
May 26 (Fri.)
The Bulgarians and Germans advance into Greek Macedonia and capture Fort Rupel.
May 29 (Mon.)
A great German attack at Verdun: the French line holds.
A renewed British advance in German East Africa: Neu Langenburg is occupied.
May 30 (Tues.)