The infantry were already over the railway, and moving forward--Gloucester regiment on the left, Liverpool regiment on the right--up the gentle but protected slope, swelling to the summit of the low ridge of Rietfontein. The 1st Devonshire regiment, in support, lay at the base, whilst the 2nd King's Royal Rifles remained in rear in charge of the baggage. On the appearance of the leading companies upon the crest, firing broke out from the whole length of the crest of Intintanyoni, to which the British infantry, lying prone, soon replied as vigorously. Of the artillery, the 42nd battery was quickly in action near the centre of the front, whilst the 53rd unlimbered some six hundred yards to the left, and began shelling a rocky underfeature of Intintanyoni, at a range of 1,500 yards. Sharp musketry assailed them. Then the 42nd battery, being ordered further to the left, passed behind the 53rd and the 10th Mountain battery, which had come into line on the left of the 53rd, and opened 1,900 yards from the summit of Intintanyoni. Thus began a severe fire fight at ranges varying from one to two thousand yards. Especially was it hotly contested where the Gloucester on the left of the British opposed the 1,400 Kroonstad men, who, under Nel, maintained the Boer right. Heavy exchanges of rifle fire swept across the valley in this part, and in spite of the steady practice of the artillery, it became necessary to reinforce the attackers. For this purpose the Devonshire regiment was pushed up on the left of the Gloucester, half the King's Royal Rifles coming from the baggage train to fill its place in support. [Sidenote: An untoward incident.]