Wellington gave sufficient credence to these reports to issue orders[157] for the immediate concentration of the different divisions[158] at the points designated for them respectively, and for their being in readiness to march at a moment’s notice, but waited till further reports from Mons should come in before doing more.[159] These orders were despatched between five and seven o’clock.[160] They provided simply, as we have said above, for the assembling of the various divisions of the army at certain convenient places. There is, however, one passage in these orders that requires attention. Alten’s division—the third British division—had been directed in the first part of the order to assemble at Braine-le-Comte, but it was further ordered to march to Nivelles (where the two Dutch-Belgian divisions of Chassé and Perponcher had been directed to assemble), if Nivelles had been attacked during the 15th, yet not until it should be found “quite certain that the enemy’s attack is upon the right of the Prussian army and the left of the British army.”[161] This concentration of three divisions of infantry with cavalry and artillery, say about 25,000 men, at Nivelles, seven miles west of Quatre Bras, was thus the only provision made in this first order or set of orders for the contingency of the French attack being made on the lines on which it actually was made; and it would seem to be a legitimate inference from this arrangement that Nivelles, and not Quatre Bras, had been selected by Wellington as the point of concentration for his army in case Napoleon advanced by way of Charleroi. In this connection it is important to note that in a letter dated 7 P.M., but probably not sent off till midnight, Müffling wrote to Blücher that the Duke would be in the morning in the region of Nivelles with his whole force.[162] Later in the evening, a despatch from Blücher to Müffling, sent from Namur, arrived,[163] announcing the concentration of the Prussian army at Sombreffe, and requesting Müffling “To give him speedy intelligence of the concentration of Wellington’s army. I immediately,” says Müffling, “communicated this to the Duke, who quite acquiesced in Blücher’s dispositions. However, he could not resolve on fixing his point of concentration before receiving the expected news from Mons.”