The Ist Army in December.
While the IInd Army was fighting on the Loire, General von Manteuffel, after the victory of Amiens, marched on Rouen.
General Farre was indeed at Arras, in the rear of this movement, but the disorder in which his troops had retired after the battle made it probable that he would do nothing, at any rate for the present. The 3rd Brigade, too, was left in Amiens, with two cavalry regiments and three batteries, to occupy the place and protect the important line of railway to Laon.
The outlook to the west was more serious than to the north, for from thence at this juncture hostile forces threatened to interfere with the investment of Paris. General Briand was at Rouen with some 20,000 men, and had advanced his leading troops up to the Epte, where at Beauvais and Gisors he came in contact with the Guard Dragoon regiment and the Saxon Cavalry Division detached from the Army of the Meuse. The detachment of infantry which accompanied the latter had lost 150 men and a gun in a night surprise.
When the Ist Army reached the Epte on December 3rd, both bodies of cavalry joined its further march, and the French retired behind the Andelles. The VIIIth Corps reached the vicinity of Rouen after petty skirmishes by the way, and found an intrenched position abandoned at Isneauville; and on December 5th General von Goeben entered the chief city of Normandy. The 29th Brigade advanced on Pont Audemer, the Ist Corps crossed the Seine higher up at Les Andelys and Pont de l'Arche. Vernon and Evreux were occupied, whence numbers of Gardes-Mobiles had retreated by railway to Liseux. On the northern bank the Guard Dragoon Regiment reconnoitred as far as Bolbec, and the Uhlan Brigade found no enemy in Dieppe.
The French had retired to Havre, and a considerable force had been conveyed in ships that were in readiness, to Honfleur on the other bank of the Seine. The 16th Division continued its march on Havre, reaching Bolbec and Lillebonne on the 11th.
The already-mentioned directions from Versailles had been communicated in advance by the Chief of the General Staff, and in accordance with them General Manteuffel now decided on leaving only the Ist Corps on the Lower Seine, and returning with the VIIIth to the Somme, where the French in Arras were now becoming active.
Besides making this evident by various small encounters, on December 9th they had attacked a company detailed to protect the reconstruction of the railway at Ham, surprising it at night, and taking most of the men prisoners; while on the 11th several French battalions advanced as far as La Fère.
To check their further progress, the Army of the Meuse had meantime sent detachments to Soissons and Compiègne. General Count von der Groeben[56] (commanding 3rd Cavalry Division) took up a position at Roye with part of the garrison of Amiens, and on the 16th met the 15th Division at Montdidier, which immediately moved up to the Somme.