Diary for Saturday, June 17, 1916:
Verdun: Germans repulsed at Mort Homme-Thiaumont-Hill 320. French gains on Hill 321, Germans repulsed there on June 18 and 19.
Trentino: Austrian CoS Conrad calls off Trentino offensive.
Western Front: First French ace Navarre shot down and severely wounded over the Argonne, never flies again. Royal Flying Corps observers engage 73 targets, 30 Anglo-German air combats (1 German plane crashes).