At this moment the men would be to some extent out of breath, their attention would be fixed on the point about to be attacked, and their flanks would be neglected. Cavalry should then descend upon them at the utmost speed that can be extracted from the horses, with a good interval from knee to knee. If there is only one squadron, one troop should take the flank or fighting line, while the other throws itself upon the support. As the distance to be covered in the open will probably be not more than from 200 to 400 yards, they will be exposed to fire, supposing none of the ground is undulating, for fifteen to thirty seconds when at full speed. As they close on the infantry neither the supports nor those in rear of them or their artillery will dare to fire, on account of their own men. If the infantry run to get into small squares, as is most likely, the cavalry must endeavor to catch them before they assemble. If they get together it may be too late for the cavalry to stop. They must then throw themselves upon them and trust to the supporting squadron to complete the attack. Although it is rare that a battle field is on such ground that there are no undulations to afford shelter for cavalry in an advanced position, this may be the case, and if so the enemy's infantry attack must be allowed to take place, but even then, by cavalry showing itself on the flanks for a moment, infantry would get together and afford a better mark for fire, and the progress of the attack would be delayed. The very appearance of cavalry frequently frightens infantry into masses. If the ground was too much exposed for the charge, men might be dismounted, with their carbines, at a safe distance to assist the infantry. If mounted infantry were at hand, they would be utilized in the same way, and the machine guns of the cavalry would also pour in their volleys. If the enemy's attack is successful, cavalry must then advance on their flanks and take its chance, and if necessary sacrifice itself to give its own infantry time to rally. If it is unsuccessful, the cavalry must be ready to take every favorable opportunity of molesting its broken ranks.