The principal defense of the Khyber Pass was the fort Ali-Musjid. This fort stands on a most commanding position, on a rock jutting out from the hillside far into the valley, which its guns commanded. It was flanked by batteries erected on the hillsides, and was a most formidable position to capture. It was situated about six miles up the valley.

The force under General Browne was divided into four brigades. The first--under General Macpherson--consisted of the 4th battalion of the Rifle Brigade, the 20th Bengal Infantry, the 4th Ghoorkas, and a mountain battery. These were ordered to take a mountain road and--led by a native guide--to make a long circuit, and so to come down into the pass at a village lying a mile or two beyond Ali-Musjid.

The second brigade--under Colonel Tytler--consisting of the 1st battalion of the 17th Foot, the infantry of the Guides, the 1st Sikhs, and a mountain battery, were also to take to the hills and, working along on their crests, to come down upon the batteries which the Afghans had erected on the hillside opposite to Ali-Musjid.

The third brigade, consisting of the 81st Regiment, the 14th Sikhs, and the 24th Native Infantry; and the fourth brigade, composed of the 51st Regiment, 6th Native Infantry, and the 45th Sikhs, were to advance straight up the valley. With them was a mountain battery, a battery of Horse Artillery, one of Royal Artillery, and a battery of 40-pounders, drawn by elephants.

These brigades marched forward until they reached some rising ground in the valley, whence they could see Ali-Musjid, at a distance of a mile and a half, in front of them. The enemy at once opened fire. The gunners in the fort had been practising for some weeks, and had got the range with great accuracy; and their shot and shell fell thick along the slope. The column was therefore marched back behind its crest, and there halted; and the men were allowed to fall out and eat their dinners, as it was desired that the flanking columns of Macpherson and Tytler--which had very much further to go--should reach the positions assigned to them before the attack began.

The artillery, however, took up their position on the crest, and opened fire on the fort. The effect of the light guns was but slight, but the 40-pounders produced considerable effect on the face of the fort.

After a halt for some time, the troops were ordered to advance. The 45th Sikhs were first thrown out upon the hillside and, working their way along on the right of the valley, opened a heavy musketry fire against the Afghans in the batteries there. Presently the 51st and 6th Native Infantry joined them; while the 81st, the 24th, and 14th Sikhs worked along on the left.

The scene was one of the most picturesque ever witnessed in warfare. From the fortress, standing on the perpendicular rock in the center of the valley, the flashes of the great guns came fast and steadily; while the edges of the rock, and fort, were fringed with tiny puffs of musketry. From the rising ground in the valley, the smoke of the British guns rose up in the still air as, steadily and fast, they replied to the fire of the fort. Both sides of the steep hill slopes were lined with British infantry--the quick flash of the rifles spurting out from every rock and bush; while continuous lines of light smoke rose from the Afghan entrenchments which faced them.

Gradually the British skirmishers advanced, until they were close to the Afghan entrenchments on the hillsides abreast of the fort. So far, there was no sign that Macpherson's brigade had reached the post assigned to it, high up on the hill; or that Tytler had worked round to the village in the enemy's rear. Some attacks which were made upon the Afghans were repulsed, with loss. Major Birch and Lieutenant Fitzgerald were killed, and Captain Maclean wounded; and between thirty and forty of the rank and file were killed, or wounded. As the fort and its defenses could not have been carried by direct attack, without immense loss of life; it was determined to cease operations until morning, in order to give the flanking columns time to reach the positions assigned to them. A wing of a regiment, from each brigade, was ordered to remain on the hillside facing the Afghan entrenchments. The rest of the troops fell back a short distance, and lay down as they were, for the night.

In the meantime, the brigades of Macpherson and Tytler had encountered enormous difficulties on the line of march. The roads they had taken were mere tracks, and there were many places where it was almost impossible to get the mountain guns along. From daybreak until late at night the troops labored, unceasingly. They knew, by the dull roar echoed and re-echoed among the mountains, that their comrades below were engaged; and the thought that a failure might ensue, owing to their absence from the contest, nerved them to continued exertions.