It is contrary to the usages of war to cause your parks or heavy artillery to enter a defile, the opposite extremity of which is not in your possession; since, in the event of a retreat". they will embarrass you and be lost. They ought to be left in position, under a suitable escort, until yoU have made yourself master of thetermination of the defile.

The art of war consists in bringing to bear with an inferior army a superiority of force at the point at which one attacks or is attacked.

God is on the side with the best artillery.

Nothing is more important in war than unity in command. When, therefore, you are carrying on hostilities against a single power only, you should have but one army acting on one line and led by one commander.

To plan to reserve cavalry for the finish of the battle, is to have no conception of the power of combined infantry and cavalry charges, either for attack or for defense.

Nothing is more rash or more opposed to the principles of war than a flank march in presence of an army in position, especially when that army occupies heights at the foot of which you must defile.