THIELEMANN passed the night at Namur, which he occupied with the Tenth Brigade; the Ninth Brigade bivouacked on the right, and the Eleventh on the left, of Belgrade, a village at a short distance from the town, on the road to Sombref; the Twelfth Brigade in rear of the Ninth; the Reserve Cavalry at Flavinne, between that road and the Sambre; and the Reserve Artillery on the left of the road. * * * * * It has already been explained that on the 14th, BLÜCHER sent off a despatch to BÜLOW desiring him to make such a disposition of his Corps as should enable his troops to reach Hannut in one march; and that at midnight of the 14th, a second despatch was forwarded, requiring him to concentrate the Fourth Corps at Hannut. The first of these despatches reached BÜLOW, at Liege, at five o'clock on the morning of the 15th; when he issued the necessary Orders with an instruction that they should be acted upon as soon as the troops had dined, and forwarded a report of this arrangement to Head Quarters. These Orders to his troops had been despatched some hours, and the consequent movements were for the most part in operation, when, towards noon, the second despatch arrived. BÜLOW, considering the effect which the change required by this new Order would have upon the troops, inasmuch as their reception was prepared in quarters to which, in this case, they would no longer proceed, and they would have nothing provided for them in the destined bivouac near Hannut, also as a great proportion of them could not receive the Orders for the change in the direction of their march until evening, decided upon deferring the new movement until daybreak of the 16th. The despatch, moreover, did not require him to establish his Head Quarters at Hannut, but merely suggested that the latter appeared the most suitable for the purpose. The General was, besides, perfectly unconscious of the commencement of hostilities, which, indeed, he had expected would be preceded by a Declaration of War; and he had also good grounds for an opinion which he had formed that it was in contemplation to assemble the whole Army at Hannut. He made a report to Head Quarters of his reasons for deferring the execution of the Order, with the intimation that he would be at Hannut by midday of the 16th. Captain BELOW, on BÜLOW's Staff, who carried this despatch, arrived at nine o'clock in the evening of the 15th at Namur, where he discovered that the Head Quarters of the Army had been transferred to Sombref.