Sir Redvers Buller on Wednesday, the 10th, had under his command three infantry divisions, a cavalry brigade, some two thousand mounted infantry, and probably altogether about eighty guns. Clery's division consists of Hildyard's and Lyttelton's brigades; the third division, comprising Hart's and Barton's brigades, is not known to have had a commander appointed; Warren's division is composed of Woodgate's brigade and of half of Coke's brigade, to which another half may have been added by taking two battalions which have been some time in Natal, and belong neither to Clery's nor to the third division. The whole force ought to be thirty thousand strong for a fight, taking the division at nine thousand instead of ten thousand, for though there have been losses there have also been drafts to fill up gaps. A party of mounted troops probably one thousand strong is reported to have been detached a few days ago by rail to Stanger on the coast near the mouth of the Tugela, and thence to have disappeared on a mission of which the purpose is as yet unknown, though it looks like a raid upon the railway between Dundee and Newcastle. The strength of the Boers in Natal has never been accurately known, and the estimates differ widely, ranging from thirty-five thousand to more than double that number. Sir George White may have nine thousand effectives at Ladysmith and might be contained by fifteen thousand Boers, perhaps by a smaller number. There will, therefore, be available against Sir Redvers Buller a force on the lowest estimate about equal to his own, and possibly outnumbering it by two to one.