Under the eyes of the Prince Royal, and in accordance with a series of regulations drawn up by him with the greatest care, and constantly modified to suit circumstances, the battalions were drilled and trained assiduously in all the walks of their profession connected with their own destined service. Every branch of their military life was illustrated by their exercises, and even the officers went through a thorough course of special instruction under accomplished tutors, who were also officers of peculiar ability and experience. While the Duke of Orléans, with the distinguished General Rostolan and two picked lieutenant-colonels, remained at St. Omer in charge of the growing force, another lieutenant-colonel was intrusted with the task of training subordinates to serve as teachers in sharp-shooting, and for this purpose a detachment was assembled at Vincennes, consisting of ten officers and a number of subalterns who had attracted attention by their particular aptitude. These, after having been thoroughly instructed in the manufacture of small arms, the preparation of munitions, and the rules and practice of sharp-shooting, were sent to St. Omer to furnish the new battalions with the officers who were to form part of the permanent organization. The weapon selected was an improvement upon the former carabines of the Tirailleurs; and while the old proportion, to wit, the eighth part of each battalion, were armed with guns of longer range, and styled distinctively Carabiniers, these were set apart as the picked company of each battalion. The Duke, taking up his residence at St. Omer, attended in person to all that was going forward; and so constant were his exertions, and so warm the zeal of those who assisted the enterprise, that in a few months all the battalions were equipped, armed, and well drilled. One fine spring morning,--it was in May, 1841,--a long column of troops entered Paris with a celerity hitherto unknown. There was no false glitter, no tinsel; everything was neat and martial, with bugles for their only music, and a uniform that was sombre, indeed, but of such harmonious simplicity as to be by no means devoid of elegance. This column consisted of the Chasseurs, coming to receive their standard from the hands of Louis Philippe, and speeding through the streets with their _gymnastic step_. On the very next day, as though to signalize the serious and entirely military character of the organization, four of these battalions were sent off to Africa, and the remaining six posted at the different leading fortresses of France, where the collections of artillery, etc., enabled them to proceed with the perfect development of their training.