FAILLY, PIERRE LOUIS CHARLES DE (1810-1892), French general, was born at Rozoy-sur-Serre (Aisne) on Jan. 21, 181o, and entered the army from St. Cyr in 1828. In the war of 1859 de Failly commanded a division, and in 1867 he defeated Garibaldi at Mentana, this action being the first in which the chassepot was used. In 187o de Failly commanded the V. corps. His inactivity at Bitsch on the 6th of August while the I. corps on his right and the II. corps on his left were crushed at'Worth and Spicheren respectively, gave rise to the greatest indignation in France, and his military career ended, after the V. corps had been severely handled at Beaumont on Aug. 3o, with the catastrophe of Sedan. The rest of his life was spent in retirement. De Failly wrote Campagne de 187o, Operations et marche du 5me corps jusqu'au 3o aout (Brussels, 1871) .