By September 1848 Chuttur Singh, with several regular regiments and nearly a score of field-pieces, was making a determined forward movement. There was also another but smaller force in the field led by a son of the Sikh chief. When Nicholson learned that the latter body was endeavouring to join the main army he made a bold attempt to cut it off, and started off post-haste for the Margalla Pass. At this spot, through which he knew the rebel troops would be compelled to march, was a formidable tower situated high up on the hillside. To gain entrance to this it was necessary to clamber up to an opening in the outer wall some ten feet from the ground, but Nicholson was not daunted by this. It was most essential that the tower should be carried by storm and its position held by his men. Accordingly he led his troops to the assault in a mad rush that carried the Pathans to the base of the tower before they could realise what a foolhardy undertaking they were engaged upon. The rest of his men very cowardly lagged behind. Then, no ladder being procurable, he set to work to break down the wall, while from above the defenders rained down a storm of stones upon them. One of these missiles hit Nicholson in the face and knocked him over, but the wound was luckily not a severe one. In the end he was forced to fall back with his handful of men, the tower being practically impregnable and a large body of Sikhs having been observed marching to the relief of the garrison. But the vigour of his attack had its moral effect. The Sikh soldiers, fearing that the assault would be renewed next day, and that Nicholson would take some terrible revenge upon them for their resistance, quietly stole away under cover of the darkness, leaving him master of the situation! It was somewhere about this time that the famous sect of Sikhs arose which honoured Nicholson by elevating him to the rank of a deity. A certain Hindu devotee in Hazara gave out that he had discovered in "Nikalseyn" the incarnation of the Brahman god, and he soon gathered about him a little company of enthusiastic fellow-worshippers. To their hero's annoyance, the "Nikalseyns," as they styled themselves, indulged in open adoration, even prostrating themselves at his feet. In vain did he threaten them with condign punishment, and at last actually resort to flogging. The devotees admired him all the more for his severity, and sang his praises still louder. "After the last whipping," says Sir Herbert Edwardes in a character sketch of the hero, "Nicholson released them, on the condition that they would transfer their adoration to John Becher (Abbott's successor at Hazara), but, arrived at their monastery, they once more resumed the worship of the relentless Nikalseyn."