26th July 1918
Western Front
General retreat of Germans on Marne toward Epernay.
Partial capture of Buzancy by Scottish Division.
Eastern Front
French troops join the northern Russian Expeditionary Force at Murmansk.
Aviation
Mick Mannock, the top British flying ace with 61 aerial victories, is killed in action over France.
Political, etc.
Japan accepts U.S.'s proposals for joint action in Siberia on behalf of Czecho-Slovaks.
Government warning to munition workers: after 29 July, alternative is return to work or military service.
Ship Losses:
Blairhall (United Kingdom) The cargo ship was torpedoed and sunk in the North Sea 3.5 nautical miles (6.5 km) north east of Sunderland, County Durham by
SM UC-40 ( Kaiserliche Marine) with the loss of a crew member.
Boy Jack (United Kingdom) The fishing smack was scuttled in the North Sea 4 nautical miles (7.4 km) east of the Cross Sands Lightship ( United Kingdom) by
SM UB-40 ( Kaiserliche Marine) with the loss of three of her crew.
Godesgenage (Belgium) The fishing vessel was scuttled in the North Sea off the Cross Sands Lightship by
SM UB-40 ( Kaiserliche Marine).
Monastir (France) The tanker was torpedoed and damaged in the Strait of Kasos (35°00′N 27°00′E) by
UC-74 ( Kaiserliche Marine). She was beached in Poro Bay, Crete. Monastir was later repaired and returned to service.