Cavalry attacks have been made with success after dark, and the advantage, of course, is gained of obviating opposing fire. Prince Kraft mentions that after the battle of Mars-la-Tour, the cavalry division, re-enforced by the divisional cavalry, rode forward to complete the advantages gained. It was almost night, and fault has been found with making the attack in the dark. If the ground is well known a night attack may be advisable. While criticising it, we have to think of the feelings of a half-defeated army about to bivouac being attacked by unknown forces in the dark. In this case, at Vionville, the enemy did not wait for a second, but withdrew, and abandoned the whole field of battle. Prince Kraft quotes the attack of Blücher at Gross-Gorchen and a cavalry attack at Loon. During the first Egyptian campaign the Life Guards made an attack by moonlight at Kassassin. I have now, I think, touched lightly on some important cavalry duties on a campaign. In some points perhaps these remarks may appear contradictory. How to combine keeping cavalry in reserve for any great action it may be called upon to perform, while using it unsparingly to assist on the battle field, if the necessity arises. It may, however, be noticed that, much as they may be criticised, few cavalry commanders have been severely blamed when they have thought it best to take the bolder course. To insure to cavalry the power of carrying out its duties successfully in war, organization and practice in peace is most essential. Infantry may suddenly be increased without much deranging its action in the field, but cavalry cannot be hurried into an increased augmentation. In tactics simplicity in every evolution and rapidity in execution are the most important principles. This simplicity of drill, I think, might be assisted if our squadrons were divided into four divisions, zuges, or pelotons. When squadrons have 48 files in the front rank there might be four of these, while weak regiments with 36 files could drill equally as well with three divisions. This system, introduced by the late Gen. Valentine Baker into the English service for a time, and now used by all European countries, was found to work well.