Up to this the conduct of the Royalists had been marked by the greatest steadiness and determination. Every shot from their batteries had told, and all promised an easy and complete success to their arms. No sooner, however, had our infantry extended into line, than the militia, unaccustomed to see an enemy before them, and unable to calculate distance, opened a useless, dropping fire, at a range where not a bullet could reach! The ignorance of this movement, and the irregularity of the discharge, were not lost upon our fellows, most of whom were veterans of the army of the Rhine; and, with a loud cheer of derision, our troops advanced to meet them, while a cloud of skirmishers dashed forward, and secured themselves under cover of a hedge. Even yet, however, no important advantage had been gained by us; and if the Royalists had kept their ground in support of their artillery, we must have been driven back with loss; but, fortunately for us, a movement we made to keep open order was mistaken by some of the militia officers for the preparation to outflank them, a panic seized the whole line, and they fell back, leaving their guns totally exposed and unprotected. "They're running! they're running!" was the cry along our line; and now a race was seen, which should be first up with the artillery. The cheers at this moment were tremendous from our "allies," who, having kept wide aloof hitherto, were now up with us, and, more lightly equipped than we were, soon took the lead. The temerity, however, was costly, for three several times did the Royalist artillery load and fire; and each discharge, scarcely at half-musket range, was terribly effective. We were by no means prepared for either so sudden or complete a success, and the scene was exciting in the highest degree, as the whole line mounted the hill, cheering madly. From the crest of this rising ground we could now see the town of Castlebar beneath us, into which the Royalists were scampering at full speed. A preparation for defending the bridge into the town did not escape the watchful eyes of our general, who again gave the word "Forward!" not by the road alone, but also by the fields at either side, so as to occupy the houses that should command the bridge, and which, by a palpable neglect, the others had forgotten to do. Our small body of horse, about twenty hussars, were ordered to charge the bridge; and had they been even moderately well mounted, must have captured the one gun of the enemy at once; but the miserable cattle, unable to strike a canter, only exposed them to a sharp musketry; and when they did reach the bridge, five of their number had fallen. The six-pounder was, however, soon taken, and the gunners sabred at their posts, while our advanced guard coming up, completed the victory; and nothing now remained but a headlong flight.