Riding back a day or two later to rejoin his troops, Nicholson found that the column had been strengthened by several additions, bringing its numbers up to a total of over four thousand men, less than a third of whom were British. This formidable body made a welcome reinforcement to Wilson's little army, and put fresh encouragement into the hearts of the besiegers. In the camp Nicholson renewed his acquaintance with Chamberlain, then recovering from a wound; Hodson, the dashing cavalry leader, who had raised a regiment of horse; and other distinguished leaders. One and all were unfeignedly glad to see him on the scene, and looked to him to spur the over-cautious commander-in-chief to a more resolute course of action.

The opportunity for Nicholson to prove his worth came before very long. A powerful siege-train had been despatched by Sir John Lawrence from Ferozepore. About the middle of August it was learnt that a large body of mutineers had sallied out from Delhi with the intention of intercepting the train, which was proceeding slowly under a rather weak escort. The duty of attacking the rebels and preventing what would be a terrible disaster was allotted to Nicholson, and he at once started off with a column of cavalry, infantry, and artillery, to give battle.

Inquiries revealed the fact that the sepoys occupied a strong position at Najafgarh, where they had repaired the bridge across the river. The road thither was a difficult one, and was rendered almost impassable at places by the swampy nature of the ground. It was the rainy season, unfortunately, so that the streams that had to be crossed were in flood. But, despite all obstacles, Nicholson pushed on doggedly, taking the lead with Sir Theophilus Metcalfe, who had volunteered to act as guide.

Sir John Kaye records the opinion of a Punjaubi officer of note who averred that not another man in the camp—"except, perhaps, Chamberlain"—could have taken the column to Najafgarh. "They went through a perfect morass," he states. "An artillery officer told me that at one time the water was over his horses' backs, and he thought they could not possibly get out of their difficulties; but he looked ahead, and saw Nicholson's great form riding steadily on as if nothing was the matter, and so he felt sure all was right."

"He saw Nicholson's great form riding steadily on as if nothing was the matter."

The engagement was opened briskly with artillery fire. Forcing the rebels' left centre, the troops drove the enemy from their strongest position near an old serai (or caravansary), silenced the guns there, and then swept irresistibly down the long line of the mutineers towards the bridge. Nicholson's plan of attack had succeeded beyond expectation. Under the terrible fusillade the sepoys broke in confusion, and ran pell-mell for the bridge and the open country on the other side, only to be pursued and cut to pieces in large numbers. The whole affair, from the moment of the first shot fired, occupied one hour, and in that time between 6000 and 8000 well-armed mutineers were put to flight.

It was a brilliant action—one of the most brilliant, indeed, that took place in the whole course of the Mutiny. Not only had a huge force of rebels been dispersed, but a number of guns had been captured, and this with the loss on our side of but twenty-five men. Well might General Wilson thank Nicholson and his gallant troops the next morning, "from my whole heart," for the signal victory gained. Congratulations poured in on the hero of the day, Sir John Lawrence telegraphing from Lahore to say, "I wish I had the power of knighting you on the spot; it should be done!"

The time was now fast approaching when Nicholson was still further to distinguish himself. The importance of not delaying the assault longer than could be helped was being forced upon him daily, and at the council table he urged the necessity for striking an immediate blow. To his far-seeing mind it was essential that the mutineers should not be allowed to gather strength while the army on the Ridge became enfeebled through forced inaction. There were sorties and dashing charges almost every hour it is true, but these brought the actual assault on the city no nearer.