assages of streams, retreats, surprises,
disembarkations, convoys, winter quarters, the execution of which
belongs to tactics, the conception and arrangement to strategy.

The maneuvering of an army upon the battle-field, and the different
formations of troops for attack, constitute Grand Tactics. Logistics is
the art of moving armies. It comprises the order and details of marches
and camps, and of quartering and supplying troops; in a word, it is the
execution of strategical and tactical enterprises.

To repeat. Strategy is the art of making war upon the map, and
comprehends the whole theater of operations. Grand Tactics is the art of
posting troops upon the battle-field according to the accidents of the
ground, of bringing them into action, and the art of fighting upon the
ground, in contradistinction to planning upon a map. Its operations may
extend over a field of ten or twelve miles in extent. Logistics
comprises the means and arrangements which work out the plans of
strategy and tactics. Strategy decides where to act; logistics brings
the troops to this point; grand tactics decides the manner of execution
and the employment of the troops.

It is true that many battles have been decided by strategic movements,
and have been, indeed, but a succession of them; but this only occurs in
the exceptional case of a dispersed army: for the general case of
pitched battles the above definition holds good.

Grand Tactics, in addition to acts of local execution, relates to the
following objects:--

1. The choice of positions and defensive lines of battle.

2. The offensive in a defensive battle.

3. The different orders of battle, or the grand maneuvers proper for the
attack of the enemy's line.

4. The collision of two armies on the march, or unexpected battles.

5. Surprises of armies in the open field.

6. The arrangements for leading troops into battle.

7. The attack of positions and intrenched camps.

8. _Coups de main_.

All other operations, such as relate to convoys, foraging-parties,
skirmishes of advanced or rear guards, the attack of small posts, and
any thing accomplished by a detachment or single division, may be
regarded as details of war, and not included in the great operations.

THE FUNDAMENTAL PRINCIPLE OF WAR.

It is proposed to show that there is one great principle underlying all
the operations of war,--a principle which must be followed in all good
combinations. It is embraced in the f