The battles of Crems, and of Hollabrunn, are already well known. This is not intended as a history of the late campaign, but merely of a part of it, into which the account of those two affairs does not enter. It was after they had taken place, that M. de Koutousoff directed his retreat upon Brunn, and effected it from that moment, without much annoyance from the enemy. This first Russian army had orders carefully to avoid a serious engagement, and to hasten its retreat, for the purpose of forming a junction with that under M. de Buxhoevden, who was advancing rapidly to its support. M. de Koutousoff executed a difficult retreat from the river Inn, upon Moravia, which commenced on the 14th October, and lasted till the 18th November; and, although very inferior to the enemy in point of numbers, this Russian army effected its junction without much loss. The farther the grand French army advanced, the more its combinations became multiplied, and the more it was obliged to detach its force. The Russian general had the advantage of being enabled to concentrate during his retreat, which he also effected in good order: for this he was principally indebted to Prince Bagration, who conducted the rear-guard with much courage. The two Russian armies formed their junction at Wischau, on the 18th of November; from which time they became one, under the command of the General in Chief, Koutousoff. Its strength consisted of 104 Battalions, 20 of which were Austrians; and 159 squadrons, 54 of which were Austrians, and 40 Cosacks. The Austrian corps was commanded by Lieutenant General Prince John de Liechtenstein: his infantry was composed of the 6th Battalion, recruited, armed, and organized about a month before; M. de Kienmayer, with the remains of his corps, (very much weakened by the movement of M. de Merveldt on Styria,) formed a part of the corps under Prince John de Liechtenstein. The Archduke Ferdinand, with the wreck of the army from Ulm, and some Battalions, also newly raised, was in Bohemia, and thereby covered the right of the combined army; which might at this time be computed at about 72,000 men. The corps under the Archduke Ferdinand was composed of from 18 to 20,000 men.