NOTE.
I am of opinion, if circumstances require a line of infantry to resort to a square, that two-deep is too light a formation to resist the shock of cavalry. However useless the third rank may appear for the purpose of file-firing, it is, notwithstanding necessary, in order to replace the men who fall in the ranks in front; otherwise you would be obliged to close in the files, and by this means leave intervals between the companies, which the cavalry would not fail to penetrate. It appears to me, also, that when infantry is formed in two ranks, the columns will be found to open out in marching to a flank. If it should be considered advantageous behind entrenchments to keep the infantry in two ranks, the third rank should be placed in reserve, and brought forward to relieve the front rank when fatigued, or when the fire is observed to slacken. I am induced to make these remarks, because I have seen an excellent pamphlet which proposes the two-deep formation for infantry as the best. The author supports his opinion by a variety of plausible reasons, but not sufficient, as it appears to me, to answer all the objections that may be offered to this practice.
MAXIM XLIX.
The practice of mixing small bodies of infantry and cavalry together is a bad one, and attended with many inconveniences. The cavalry loses its power of action. It becomes fettered in all its movements. Its energy is destroyed; even the infantry itself is compromised, for on the first movement of the cavalry it is left without support. The best mode of protecting cavalry is to cover its flank.