A winter of death and hunger
The winter of 1917 was exceptionally harsh. Severe conditions and relentless battles between the Germans and Russians disrupted supply lines, leading to severe food shortages. Starvation became widespread, and many succumbed to malnutrition. The corpses of the fallen presented an opportunity for some, however. This brutal winter had left the wolves hungry as well and they were drawn to the bloodshed. Details are unknown, but these wolf attacks apparently grew so severe that it is believed the two armies called a ceasefire, so they could both deal with the wolves first and continue fighting each other later. It's difficult to say how much if this is true, as the main sources on the Wolf Truce are American newspapers reporting on battles between the German and Russian Empires. Who knows, maybe they made up a story to sell more newspapers.
