sentences:  Ferry served as Under-Secretary of State for Foreign Affairs from 13 June 1914 to 29 October 1915 in the first and second governments of René Viviani.Ferry's diaries, published as "Carnets secrets 1914-1918", are a valuable source on relations between the French government and its generals during the First World War.Ferry was an early and trenchant critic of army commander Joseph Joffre.