Born at Neufchâtel-sur-Aisne in the Picardy region, Driant graduated from the Saint-Cyr military academy and became an Army officer in 1877. Appointed to infantry, he joined the 4th Regiment of Zouaves in North Africa as a Captain in 1886. In 1888 Driant married the daughter of nationalist General Boulanger. He spent the years 1892–1896 as an instructor at the Saint-Cyr military academy, and from 1899–1905 commanded the 1st Battalion of Chasseurs.
He resigned his commission in 1906, as he was banned from achieving higher rank due to his controversial father-in-law and by his strong nationalist and Catholic sentiments. He devoted his time to journalism and politics and was elected to the Chamber of Deputies as a representative for Nancy in 1910. Driant devoted his efforts to strengthening France's defenses.