British monitors engage German destroyers off the Belgian coast and put them to flight. May 18 (Thur.) An Air Board is constituted in Great Britain. The Italians retire in the Trentino. Sinai Peninsula:--A British raid on El Arish. Mesopotamia:--Russian cavalry, after a ride of 200 miles from the Persian frontier, join the British on the Tigris. May 19 (Fri.) A British success at Vimy Ridge. Mesopotamia:--The Turks evacuate the Es Sinn position and withdraw to Kut. A German air-raid on Kent. May 20 (Sat.) Verdun:--Fierce fighting for the Mort Homme. A further Italian withdrawal in the Trentino. May 21 (Sun.) The Germans win trenches from the British on the Vimy Ridge. Verdun:--Part of the Mort Homme is captured by the Germans, but the French advance on the Douaumont Plateau and carry the Haudromont quarries. Mesopotamia:--The British advance on the south bank of the Tigris. May 22 (Mon.) The Sudan:--The action of Beringia: the Sultan of Darfur is defeated. May 23 (Tues.) Ramillies, 1706. The Sudan:--El Fasher, the capital of Darfur, is captured by the British. May 24 (Wed.) Verdun:--Cumières is stormed by the Germans. May 25 (Thur.) 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.) Verdun:--The French abandon the Bethincourt-Cumières road. Italy:--The battle for the Pass of Buola. East Africa:--A Belgian force invades Ruanda. May 31 (Wed.) Union Day, South Africa, 1910. The Battle of Jutland is fought between the main British and German fleets: the German fleet, with considerable loss, escapes aided by mist.[3] [3] The following were the British vessels lost in this action:-- Battle Cruisers-- _Indefatigable_ _Invincible_ _Queen Mary_ Cruisers-- _Black Prince_ _Defence_ _Warrior_ Flotilla leader-- _Tipperary_ Destroyers-- _Ardent_ _Fortune_ _Nestor_ _Nomad_ _Shark_ _Sparrowhawk_ _Turbulent_ The larger German vessels known to have been sunk were the following:-- _Lutzow_, _Pommern_, _Frauenlob_, _Wiesbaden_, _Elbing_, _Rostock_. Italy:--Asiago and Arsiero are captured by the Austrians (see June 25 and 27). The Caucasus:--Mamakhatun is retaken by the Turks (see March 14 and July 12). June 1 (Thur.) Verdun:--The Germans begin a fresh attack on Fort Vaux. June 2 (Fri.) The Germans capture trenches from the Canadians at Ypres (see June 13), and from the French at Verdun. June 4 (Sun.) Verdun:--Fort Vaux is isolated.