World War One Diary for Monday, July 30, 1917:
Aisne: Artillery in action.
Galicia: Austrian Third Army retakes Zaleszczycki and Sniatyn. German Suedarmee, Austrians and Turk divisions force river Zbruch and beat off Siberian regiment and Royal Navy Air Service armoured cars on July 31.
Eastern Front: RNAS armoured car shoots down strafing German plane on river Zbruch, Galicia.
Salonika: British hospital cases c.12,500 (mainly malaria).