While the artillery was engaged in pouring round shot and shell into the Plaza, Tucker, with the Red Star Guard, was throwing up a breastwork some seventy or eighty yards to the left, and in advance of the church Walker occupied. The ground where Tucker was at work touched the road leading straight into the Plaza; and he was preparing it for the reception of a gun which might thence have told with much effect on the Allies. The enemy, however, observed Tucker’s men, and before the breastwork was complete, several hundred of the newly-arrived Costa Ricans sallied from the Plaza, and advancing through the plantain walks, fell with fury on the Red Star Guard. Tucker fought fiercely for several minutes, his men showing fine spirit, and doing good work with their Minié muskets. But the strength of the enemy was such, as to force him to retire to the church, after the loss of several killed and wounded. The several roads and bye-paths in the rear, and on the flanks of the American main position at the church, were well watched and guarded by the Rangers, as well as by some companies of Infantry and Rifles. Captain Northedge’s company on the left, was assailed about the same time with Tucker; but he held his position, and the enemy retired. There was more or less skirmishing on the flanks and rear, while the Artillery was exhausting its supplies of shot; after some three hundred and fifty rounds had been fired, it was clear that few of the enemy remained in the Plaza, and that they were taking positions on the road between San Jorge and Rivas, with a view of harassing, if not of preventing the return of the Americans to the latter place. The delay in the re-appearance of some Rangers sent to Rivas to ascertain whether the road to that place was open, showed that the Allies were attempting to occupy it. The enemy thus having almost entirely deserted San Jorge, and offering action along the road to Rivas, Walker decided to accept the offer.