Marbot, ch. xxviii.
Lettow-Vorbeck estimates the French loss at more than 24,000; that of the Russians as still heavier, but largely owing to the bad commissariat and wholesale straggling. On this see Sir R. Wilson's "Campaign in Poland," ch. i.
Napoleon on February 13th charged Bertrand to offer verbally, but not in writing, to the King of Prussia a separate peace, without respect to the Czar. Frederick William was to be restored to his States east of the Elbe. He rejected the offer, which would have broken his engagements to the Czar. Napoleon repeated the offer on February 20th, which shows that, at this crisis, he did wish for peace with Prussia. See "Nap. Corresp.," No. 11810; and Hausser, vol. iii., p. 74.