Barès entered the "École Spéciale Militaire" in 1892 and graduated in 1894, choosing the Marine Infantry arm. He was affected to three different regiments and was finally promoted to the rank of Lieutenant. He participated to the Second Madagascar expedition in 1895. He then entered the "École Supérieure de Guerre" in 1896 where he changed is path of career to the regular Infantry of the French Army. With the development of military aviation, he joined the air service of the Army in several infantry regiments and was made a Knight of the Legion of Honour on 14 October 1911 for his exceptional services to the Military Aeronautics.