But, although new armies were speedily organized—if organized, may be termed those who brought with them into the contest much courage and devotedness, yet, little discipline, the Americans, in this instance, proceeded with a caution that proved their respect for the British garrison, strongly supported as it was by a numerous force of Indians. Within two months after the capitulation of Detroit, a considerable army, Ohioans and Kentuckians, with some regular Infantry, had been pushed forward as with a view to feel their way; but these having been checked by the sudden appearance of a detachment from Amherstburgh, had limited their advance to the Miami River, on the banks of which, and on the ruins of one of the old English forts of Pontiac’s days, they had constructed new fortifications, and otherwise strongly entrenched themselves. It was a mistake, however, to imagine that the enemy would be content with establishing himself here. The new fort merely served as a nucleus for the concentration of such resources of men and warlike equipment, as were necessary to the subjection, firstly of Detroit, and afterwards of Amherstburgh. Deprived of the means of transport, the shallow bed of the Miami aiding them but little, it was a matter of no mean difficulty with the Americans to convey through several hundred miles of forest, the heavy guns they required for battering, and as it was only at intervals this could be effected; the most patient endurance and unrelaxing perseverance being necessary to the end. From the inactivity of this force, or rather the confinement of its operations to objects of defence, the English garrison had calculated on undisturbed security, at least throughout the winter, if not for a longer period; but although it was not until this latter season was far advanced, that the enemy broke up from his entrenchments on the Miami, and pushed himself forward for the attainment of his final view, the error of imputing inactivity to him was discovered at a moment when it was least expected.
It was during a public ball given at Amherstburgh on the 18th of January 1813, that the first intelligence was brought of the advance of a strong American force, whose object it was supposed was to push rapidly on to Detroit, leaving Amherstburgh behind to be disposed of later. The officer who brought this intelligence was the fat Lieutenant Raymond, who commanding an outpost at the distance of some leagues had been surprised, and after a resistance very creditable under the circumstances, driven in by the American advanced guard with a loss of nearly half his command.