Bulgarian and German soldiers with a Skoda mountain gun on the Balkan Front.
"Five times the Bulgarians stormed the ridge beyond [Lake Ostrovo] and five times they were beaten back with heavy losses, but on the following day they took one last Serbian position. It was the limit of their advance. By August 26 the Serbs were holding firm. For four more days there was sporadic gunfire as rival batteries opened up on each other's positions, but gradually the fighting died down and, by the end of the month, all was quiet."
Aware Romania was about to join the Allies in the war against Austria-Hungary, and anticipating an offensive by the Allied forces — French, British, Russian, and Serbian — against the Bulgarian position in northern Greece, Bulgarian forces mounted a preemptive blow against the Allies, striking along the front held by Serbian troops on August 17, 1916. Bulgaria would continue to prove effective in preventing Allied aid to Romania.
The Gardeners of Salonika by Alan Palmer, page 78, copyright © 1965 by A. W. Palmer, publisher: Simon and Schuster, publication date: 1965
1916-08-26, 1916, August, Bulgarians, Serbians, Bulgarian soldier, Bulgarian army