30th May 1916
Western Front
Battle of Verdun: French retreat from Bethincourt-Cumieres road towards Chattancourt; deliver a counter-attack.
Southern Front
Bulgars occupy Rupel Pass.
Asiatic and Egyptian Theatres
Major-General Barnardiston's despatch on Tsing-tauoperations, September-November 1914 published.
Naval and Overseas Operations
British intelligence picks up on increased German fleet activity. Admiral Jellicoe prepares to meet the Germans.
North Sea: Royal Navy’s Room 40 gives early warning of German Fleet sortie and that 16 U-boats are at sea. Main body of Grand Fleet (Jellicoe) leaves Scapa and Invergordon at 2200 hours. Battlecruiser Force (Beatty) leaves Rosyth.
The British Grand Fleet head out into the North Sea.
British occupy Neu Langenburg (Lower Nyassa), and force Germans to retreat from Mikotsheni (German East Africa).
U.S. Embassy in Russia reports that 17,000 Austro-Hungarian POWs in Russia have died due to poor treatment.
Germany justifies its invasion of Greece, stating that aside from a Greek fort, the country’s neutrality was “otherwise” respected.
Ship Losses:
Baron Tweedmouth (United Kingdom) The cargo ship was shelled and sunk in the Mediterranean Sea 25 nautical miles (46 km) east by north of Cape Carbon, Algeria (37°10′N 5°15′E) by
SM U-39 ( Kaiserliche Marine). Her crew survived.
Dalegarth (United Kingdom) The cargo ship was torpedoed and sunk in the Mediterranean Sea 12 nautical miles (22 km) north east of Cape Corbelin, Algeria (37°18′N 4°44′E) by
SM U-39 ( Kaiserliche Marine). Her crew survived.
Hermesberg (Italy) The cargo ship was sunk in the Mediterranean Sea off Bougie, Algeria (37°07′N 5°27′E) by
SM U-39 ( Kaiserliche Marine). Her crew survived.
Julia Park (United Kingdom) The cargo ship was torpedoed and sunk in the Mediterranean Sea 10 nautical miles (19 km) north of Cape Carbon (37°03′N 5°14′E) by
SM U-34 ( Kaiserliche Marine). Her crew survived.
Rauma (Norway) The cargo ship was sunk in the Mediterranean Sea north of Cape Carbon (37°08′N 4°57′E) by
SM U-39 ( Kaiserliche Marine). Her crew survived.