World War One Diary for Saturday, July 28, 1917:
Eastern Front
Galicia: Austro-German troops reach Russian frontier at Gusiatyn (Wild Cossack Division confronts 40,000 deserters there from July 25-27) on river Zbruch. Kaiser Wilhelm II leaves for Vilna.
Secret War
Russia: Somerset Maugham sails for Vladivostok.
Home Fronts
Britain: Royal Warrant authorizes Tank Corps.