He was busily employed up to the end of his life in writing treatises, pamphlets and open letters on subjects of military art and history, and in 1859 he was asked by Napoleon III to furnish a plan of campaign in the Italian War.
He was busily employed up to the end of his life in. He was writing treatises on subjects of military art and history. He was writing pamphlets on subjects of military art and history. He was writing open letters on subjects of military art and history. He was asked by Napoleon III. This was in 1859. This was to furnish a plan of campaign in the Italian War.