The article is devoted to analysis of the main forms of charitable activity of the Orthodox monks during the First World War. Hastily converted into a monastic hospitals and extended hospital opens new, as well as shelters for orphaned children. Nuns and novices tended to the wounded, not only in their own monastic hospitals, but also in others. Representatives of the black clergy served as confessors various military units and health facilities. Some monks took up the post of regimental priests.