Amazon.com: Napoleon's Finest: Marshal Louis Davout and His 3rd Corps: 9780974877419: Bowden, Scott (trans).: Books
"This is the first ever translation into English of Davout's Opérations du 3e Corps, first published in French by Davout's nephew in 1896. It details the extraordinarily successful campaigns of the 3rd Corps of Napoleon's Grande Armée of 1805–1807, under the command of Marshal Louis Davout, most notably at the Battle of Auerstädt, 14 October 1806. Outnumbered by more than two to one, Marshal Davout's 26,000-man corps defeated his Prussian opposition and put them to flight.
The Marshal's military papers, presented to the French Ministry for War in 1874 by his heirs, are a key primary source for the study of the first campaigns of the Grande Armée. They include the after-action reports filed by Davout's brigade, division, and other commanders and they detail the marches and combat these officers personally directed, shedding interesting light on the campaigns in Germany and Poland.
The book includes additional analysis, colour maps, colour orders of battle, officer biographies, and other material designed to supplement the original work and place it in context."
in case you like the original text in French
OPÉRATIONS DU 3
MARÉCHAL DAVOUT, DUC D'AUERSTAEDT
(Please note the spelling)
free for download