Army Group Centre (French: Groupe d'armées du Centre, G. A. C.) was a grouping of French field armies during World War I, which was created on June 22, 1915. The army group covered the Western Front roughly between Rheims and Verdun.
Général Émile Fayolle (May 4, 1917 – December 1, 1917)
Général Paul Maistre (July 6, 1918 – December 1918)
Sources
The French Army and the First World War by Elizabeth Greenhalgh
Philippe Pétain et Marc Ferro (Avant-propos), La Guerre mondiale : 1914–1918, Toulouse, Éditions Privat, 2014, 372 p. (ISBN 978-2-708-96961-2, OCLC 891408727)