May 28, 1916
The Sopwith Scout prototype goes to A Squadron, No 5 Wing, RNAS for testing. Called the Scout by the RFC and Type 9901 by the RNAS, the plane will receive its popular nickname after Brigadier General W. Sefton Rancker sees it for the first time: "Good God! Your 1-1/2 Strutter has had a pup!"
Sopwith test pilot Harry Hawker takes the prototype Triplane on its first flight.
Air War:
French pilot Andre Jean Delorme and observer Edmond Barthe, in a Caudron G.4, shoot down an Eindecker for victory number 1
North Atlantic Ocean:
French schooner
St. Louis, 336 tons, carrying a load of salt from Cadiz, Spain to St. Pierre Et Miquelon, Newfoundland, Canada, founders off Graziosa, in the Azores Islands.
Mediterranean Sea:
Walter Forstmann, commanding
U-39, uses his deck gun to sink British freighter SS
Lady Ninian, 4,297 tons, bound from Newport News to Livorno with a load of steel rails and oats. His score is now 67 ships and 155,302 tons.