Marshal of France and Duke of Castiglione (1757–1816). LS in French, signed “Augereau,” one page, 7.75 x 12.5, April 3, 1805. Letter to Marshal Berthier, Minister of War. In part (translated): “H.M. the Emperor has just restored to active service Col. Fournier, a fine officer of whom I’m very fond. His brother, the Squadron Chief who also served with distinction under my orders implores the good offices of His Majesty and of you, Marshal…grant him the protection…on which the rest of his life depends. I want very much to see him attached to the General Staff of the Army which I command. Don’t refuse me, I beseech you, Marshal. I make bold to count on this new token of your friendship for me.” In fine condition, with central horizontal and vertical folds. RR Auction COA.