Such, as well as I can recollect, was the account given by Lannes, who laughed immoderately in describing the consternation of the Austrian officers when they discovered the trick that had been played upon them. When Lannes performed this exploit he had little idea of the, important consequences which would attend, it. He had not only secured to the remainder of the French army a sure and easy entrance to Vienna, but, without being aware of it, he created an insurmountable impediment to the junction of the Russian army with the Austrian corps, commanded by Prince Charles, who, being pressed by Massena, hastily advanced into the heart of the Hereditary States, where he fully expected a great battle would take place.
As soon as the corps of Murat and Lannes had taken possession of Vienna the Emperor ordered all the divisions of the army to march upon that capital.
—[The story to told in much the same way in Theirs (tome vi, p. 260), Rupp (p. 57), and Savory (tome ii. p. 162), but as Erreurs (tome i. p. 814) points out, Bourrienne makes an odd mistake in believing the Thabor Bridge gave the French access to Vienna. The capital is on the right bank, and was already in their power. The possession of the bridge enabled them to pass over to the left bank, and to advance towards Austerlitz before the Archduke Charles, coming from Italy, could make his junction with the allied army. See plan 48 of Thiers’ Atlas, or 58 of Alison’s. The immediate result of the success of this rather doubtful artifice would have been the destruction of the corps of Kutusoff; but Murat in his turn was deceived by Bagration into belief in an armistice. In fact, both sides at this time fell into curious errors.]—
Napoleon established his headquarters at Schoenbrunn, where he planned his operations for compelling the corps of Prince Charles to retire to Hungary, and also for advancing his own forces to meet the Russians. Murat and Lannes always commanded the advanced guard during the forced marches ordered by Napoleon, which were executed in a way truly miraculous.