The American army moved slowly forward, and before nightfall the long lines of its blue uniforms went over the prairie rolls in full sight of the fort. The Stars and Stripes were still flying above the badly damaged ramparts, and cheer after cheer went up from thousands of throats, including those of the rescued garrison. They had not really lost many men, killed or wounded, but among the killed was their commander, Major Brown, after whom the fort was now named. In later years, a town grew up around the site of the frontier fortress, and it is called Brownsville. General Taylor's men had triumphantly cut their way through the difficult twenty miles from the sea to the siege, but perhaps any individual hero among them might have safely quoted the wise remark of Lieutenant Grant, as he looked at the fort and recalled his exploits of the day. "Well, after all," he said to himself, "I don't know but what the battle of Resaca de la Palma would have been won just as well if I had not been there." Long years afterward, it was to be said of a number of other battles that they would not have been won just as well if he had not been there to win them, and the same would be equally true of several of his young companions, as inexperienced as himself, and as ignorant of the great things before them in the far future. Their army went into camp near the fort; and the Mexican forces, for the greater part, were believed to have retreated across the Rio Grande. It is said that after every storm there comes a calm, but it was not a pleasant calm in the neighborhood of the American camp. There were all the while strong parties of Mexican lancers hovering around in all directions, on the lookout for imprudent stragglers, and a sharp watch had to be kept to guard against sudden dashes at the outposts, for the "rancheros," as the Mexican horsemen were called, were both well-mounted and enterprising. There was yet another kind of calm of a curious character. General Taylor absolutely did not know what to do next, and he could not know until after he should hear from the President what the statesmen in Congress had decided. Beyond a doubt, war was going on right here, but there was a dispute as to the nature of it and as to what was to be done with it. The Mexican geographers claimed that the southern boundary of Texas, even if it had been legally annexed to the United States, was at the Nueces River, and that all their country south of that line was still their own. According to them, therefore, General Taylor's army was not in Texas at all, but in Mexico. On the other hand, the American geographers placed the boundary at the Rio Grande, many miles south of the Nueces, and claimed that the forces defeated by General Taylor had invaded the United States. If both parties were right, then it might have been said that all that land between the rivers did not belong to anybody until the title to it should be settled by a military court and gunpowder arguments.