He himself retreated towards Etoges endeavouring to rally his scattered detachments, but Napoleon was too quick for him and in three successive days he defeated Sacken at Montmirail,York at Champ Aubert and Blucher and his main body at Etoges, pursuing the latter towards Vertus.
Osten-Sacken, Feldzug 1812 (Berlin, 1899); H.
Osten-Sacken, " On the North American Cecidomyidae," Smithsonian Miscellaneous Collections, vol.
See Baron von Sacken, Das Grabfeld von Hallstatt; Bertrand and S.
Schaden, Lutterbeck, von Osten-Sacken and Schluter - Baader's sammtliche Werke (16 vols., 1851-1860).