5. But if the hostile infantry have _supporting cavalry_, we must not charge in such a manner as to enable it to take us in flank. 6. To _test the infantry_ about to be attacked, cavalry may pass a few hundred paces in its front, to threaten it, sending forward a few horsemen to fire, gallop forward, and raise a dust. If the infantry, instead of disregarding these movements, begin to fire, it will probably be broken, on the cavalry's charging it at once and vigorously, whether in column or in line. But otherwise, if the infantry reserve its fire, and only sends out a few sharpshooters. 7. _Ascending slopes_, if not too steep, are not unfavorable to attacks on infantry; for their shots, as experience shows, will then mostly fly too high. 8. On a _descending slope_, cavalry charges down on infantry with terrible effect; as it then arrives with an impetus which nothing can stop. At Waterloo, a column of French infantry was ascending a steep slope. Suddenly the Scotch Greys cavalry regiment dashed down upon it from above, rode over, and destroyed it. B. ON SQUARES. 1. Infantry squares are usually charged in _open column_; the distance between the subdivisions being a subdivision front and a few yards over; in order that each subdivision may have time to break into the square, or, if unsuccessful, to disengage itself and retire. But the distances should never be so great as to allow the square to reload after firing a volley at the next preceding subdivision. 2. The leading subdivision will usually _draw the fire_ of the square. If this is delivered at very short range, say at twenty paces, it will raise up a rampart of dead and wounded men and horses which will probably suffice to check the following subdivisions, and so repulse the charge. But an infantry square rarely reserves its fire so long; and if the fire is delivered at any considerable distance, no such effect will be produced. 3. A _good formation_ to attack a square is said to be a column of three squadrons, with squadron front, at double distance; followed by a fourth squadron, in column of divisions or platoons, to surround the square, and make prisoners, if it is broken. 4. Before cavalry charges a square, it should be first shattered or demoralized by _artillery fire_, when this is practicable. In the absence of artillery, sharpshooting infantry skirmishers may, to a certain extent, supply its place. 5. A square should be attacked at one of its angles, which are obviously its weakest and most vulnerable points. But to cover a real attack on an angle, cavalry sometimes makes a _false attack_ on the front of a square. 6. When squares are formed checkerwise, cavalry must attack _a flank square_, and not expose itself to a cross-fire by charging an interior one.