As soon as favourable ground had been reached, Wood was signalled to halt and wait for the main body, and when the junction was effected the order was given to form a large hollow square. Inside this square were two companies of engineers, together with the ammunition-carts, water-carts, and ambulance waggons, carts with intrenching tools, stretchers and bearers, together with two gatling-guns in a reserve. The front face of the square was formed by the 80th Regiment, with two gatling-guns in their centre and two 7-pounders on their right. The right face of the square was formed of seven companies of the 13th Regiment. Next to these came two 7-pounder and one 9-pounder guns; four companies of the 58th completed the line on this side. The rear face was composed of two companies of the 21st, and three companies of the 94th, with a 9-pounder gun. On the left or west flank were three companies of the 94th, two 7-pounder guns, eight companies of the 90th, and two 9-pounders. Buller's cavalry were away, scouring the country on the flanks. Colonel Drury-Lowe, with two squadrons of the 17th Lancers and Captain Shepstone's Basutos, formed the rearguard. The square moved forward for a few miles, when they began to near the smaller kraals. Towards the left front the Zulu columns could now be seen across the plain, with the sun glancing down upon their long lines of white shields. Upon reaching the first kraal the square was halted while it was fired. The next kraal was a very large one, called Unodwingo. This was also fired; but, as it was found that the smoke drifted across the plain so as to act as a screen to the Zulus, Lord Chelmsford ordered its extinction. Strong columns of the enemy could now be seen moving out in good order from Ulundi, and the square halted on some slightly-rising ground. The Zulus soon opened a dropping fire on the right front, and from a strong force operating on some broken ground near Unodwingo on the left. By nine o'clock the Zulu attack was fairly developed. Buller's men then made a strong demonstration on the left, driving the Zulus from the hollow where they were sheltered back to the Unodwingo kraal. This movement was well supported by Shepstone and the Basutos.