By this means every battalion would possess a powerful battery of this ammunition, _in addition_ to all its ordinary means of attack and defence, and with scarcely any additional burthen to the flank companies, the whole weight of the Rocket and stick not exceeding six pounds, and the difference between the weight of a rifle and that of a musket being about equivalent. As to the mode of using them in action, for firing at long ranges, as these Rockets are capable of a range of 2,000 yards, a few portable frames might be carried by each regiment, without any incumbrance, the frames for this description of Rocket not being heavier than a musket; but as the true intention of the arm, in this distribution of it, is principally for close quarters, either in case of a charge of cavalry, or even of infantry, it is generally supposed to be fired in vollies, merely laid on the ground, as in the Plate here described. And, as it is well known, how successfully charges of cavalry are frequently sustained by infantry, even by the fire of the musket alone, it is not presuming too much to infer, that the repulse of cavalry would be _absolutely certain_, by masses of infantry, possessing the additional aid of powerful vollies of these shell Rockets. So also in charges of infantry, whether the battalion so armed be about to charge, or to receive a charge, a well-timed volley of one or two hundred such Rockets, judiciously thrown in by the flank companies, must produce the most decisive effects. Neither can it be doubted, that in advancing to an attack, the flank companies might make the most formidable use of this arm, mixed with the fire of their rifles or carbines, in all light infantry or tiraillieur manœuvres. In like manner, in the passage of rivers, to protect the advanced party, or for the establishment of a _tete-du-pont_, and generally on all such occasions, Rockets will be found capable of the greatest service, as shewn the other day in passing the Adour. In short, I must here remark that the use of the Rocket, in these branches of it, is no more limited than the use of gunpowder itself. Fig. 2 represents the covering of the storm of a fortified place by means of Rockets. These are supposed to be of the heavy natures, both carcass and shell Rockets; the former fired in great quantities from the trenches at high angles; the latter in ground ranges in front of the third parallel. It cannot be doubted that the confusion created in any place, by a fire of some thousand Rockets thus thrown at two or three vollies quickly repeated, must be most favourable, either to the storming of a particular breach, or to a general escalade.