A yet more decisive mishap meanwhile had occurred in another part of the field. Reckoning that Hart and Hildyard were to attack in mutual support, the time had come for the latter to advance, and he had done so. The beginning of his movement was to have been covered by the six naval 12-pounders accompanying Long's two field batteries, and a position had been appointed them to that effect; it being intended apparently that the army guns should not come into action till later, when the development of Hildyard's movement would permit them to approach the enemy within their shorter range without losing the necessary support of infantry fire,--directly by the 6th brigade, specifically charged with that duty, and indirectly by the occupation which Hildyard's attack would necessarily give the Boers. Instead, however, of attending closely to the requirements of a movement {p.229} where a certain exactness of touch was evidently necessary, Long's two field batteries, leaving their infantry escort behind, galloped rapidly forward on the east side of the railroad and came into action 1200 yards from Fort Wylie, and, as Buller judged, only 300[28] yards from the enemy's rifle pits. The slow-moving oxen fortunately were unable to drag the heavier naval guns to the same position to share the fate that quickly befell. A very heavy fire was opened from the Boer rifle pits, and although the gunners stuck manfully to their pieces until the ammunition in the limbers was exhausted, they were compelled then to leave them on the plain, retreating for shelter to a donga. The breech-blocks, even, were not carried away; it is said because they expected to return again to action. The naval detachment, 300 yards further back, were exposed to the same fire, but received only its outer fringe. The native drivers bolted, and many of the oxen were killed or stampeded; but the {p.230} seamen contrived to drag their guns out of range. [Footnote 28: This "3" in the copy before me may be a misprint for "8." The London _Times_ correspondent gives 800 yards for the rifle fire.] News of this mishap reached Buller as he was returning from witnessing Hart's discomfiture. Hildyard was directed to move two regiments of his advancing brigade to the right to save the pieces; but, though the order was steadily executed, it was found impossible to keep the troops out of cover under the fire of Wylie, which had been momentarily silenced by Long's impetuous attack, but had now opened again. The batteries had failed by preceding, and so losing, infantry support; the infantry in turn failed because the guns were powerless. A sudden and desperate rush with harnessed teams succeeded in withdrawing two of the twelve abandoned pieces, in performing which service the son of Lord Roberts lost his life. But a second attempt found the enemy on guard again, and out of 22 horses that started 13 were killed before half-way to the spot.