Eastern Front
Romania: Battle of Pralea: Despite strengthening resistance, German-led forces capture the commune of Nănești, Romania from Russian and Romanian troops. After taking Fundeni, Germans decide to halt offensive at river Sereth.

Asiatic and Egyptian Theaters
Mesopotamia: British bombers carry out an attack on an Ottoman munitions plant in Baghdad.

Naval and Overseas Operations
North Sea: British submarine E.36 collides with another submarine E.43 in the North Sea, resulting in E.36’s sinking with loss of all hands.
Eastern Mediterranean: French Salonika-bound transport Admiral Magon (5,566t) sunk by U-39 (Walter Forstmann).
East Africa: General Reginald Hoskins succeeds General Jan Smuts in command of British forces, East Africa (see February 19th, 1916 and May 30th, 1917). Official despatch from German East Africa reports progress in Rufiji valley region and west of Mahenge. Main and Kilwa Forces only 40 miles apart, Hoskins flies from Kilwa to GHQ in a BE2c. Only 15,000 fit troops against 8,400 Germans with 20 guns and 73 MGs. Smuts sails from Dar-es-Salaam for London.

Political, etc.
Austria-Hungary: Coffee rations in Budapest are cut to 125 grams per person for each month.
Russia: The Tsar addresses a rescript to Prince Golitzin laying down the main lines of his policy.
Turkey: More than 1000 Americans in Ottoman Syria and Palestine apply for evacuation out of the region.
Belgium: German occupation in Belgium sentences 30 Belgians to death for attempting to escape through the Netherlands and join the Belgian Army.

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On the kinkometer, my kink measures as a sine wave.