HISTORY - BERTHIER Louis Alexandre (1753 - 1815) - Autograph letter signed

Letter Signed "Mal Alex. Berthier" to Marshal Jean Lannes, Dantzig, June 1, 1807, I p. in-4°. Letter written two weeks before Friedland's victory; it relates to the ambulance vans which must follow each regiment; the Emperor asks if all the regiments are equipped with this box, if it has been maintained with care.