Jean-Baptiste Modeste Eugène Vachée:

Napoléon en Campagne (1913):

https://archive.org/details/napolonencampagn00vach
http://catalog.hathitrust.org/Record/009964382
http://catalog.hathitrust.org/Record/009017352
http://gallica.bnf.fr/ark:/12148/bpt6k3770744

English translation (1914). Translated from the French by G. Frederic Lees:

https://archive.org/details/napoleonatwork00vachrich

Etude du caractère militaire du maréchal Davout (1907). Note : Extrait de la "Revue militaire générale", mai-septembre 1907:

Originally published in the Revue militaire générale (1907):

Vol. 1:

Mai Part 1: pp. [401]-414:
http://books.google.com/books?id=DCUDAAAAYAAJ&pg=PA401

Juin Part 2: pp. [573]-591:
http://books.google.com/books?id=DCUDAAAAYAAJ&pg=PA573

Vol. 2:

Juillet: Parts 3-4: pp. [30]-45:
http://books.google.com/books?id=PCUDAAAAYAAJ&pg=PA30-IA2

Août: Part 5: pp. [155]-174:
http://books.google.com/books?id=PCUDAAAAYAAJ&pg=PA155

Septembre: Part 6: [293]-308:
http://books.google.com/books?id=PCUDAAAAYAAJ&pg=PA295