On Napoleon's left, and resting on the fortresses of Wittenberg and Magdeburg, the corps of Oudinot, Bertrand, and Reynier threatened Berlin and Bernadotte's army of the north cantonned in its neighbourhood; while Davoust at Hamburg faced Bernadotte's northern detachments and menaced his communications with Stralsund.

Davoust certainly was far away, and the loss of this ablest of Napoleon's lieutenants was severely to be felt in the subsequent complicated moves; with this exception, however, Napoleon's troops were well in hand and had the advantage of the central position, while the allies were, as yet, spread out on an extended arc.
But Napoleon once more made the mistake of underrating both the numbers and the abilities of his foes.

By great exertions they now had close on half a million of men under arms, near the banks of the Oder and the Elbe, or advancing from Poland and Hungary.

True, many of these were reserves or raw recruits, and Colonel Cathcart doubted whether the Austrian reserves were then in existence.[344] But the best authorities place the total at 496,000 men and 1,443 cannon.
Moreover, as was agreed on at Trachenberg, 77,000 Russians and 49,000 Prussians now marched from Glatz and Schweidnitz into Bohemia, and speedily came into touch with the 110,000 Austrians now ranged behind the River Eger.

The formation of this allied Grand Army was a masterly step.