The Great War: Week by Week 100 Years Later S04E19 - Week 146: The Macedonian Standoff - The Five Nation Army Is Repelled

Italy, France, Serbia, Britain and Russia joined forces at the Macedonian Front and the "five nation army" wants to break through the lines held by Bulgaria with some German support. But the Bulgarian defences can withstand the attack and so Maurice Sarrail is forced to abandon all hopes for a breakthrough. Meanwhile another offensive is about to proceed at the Italian front which had been quiet all winter.