Some Principles of Maritime Strategy

"Dangerous invasion," not exceeding 150,000 men.

NATURE OF ULTERIOR OBJECT

Limited and unlimited wars.

From the nature of the ulterior object we get an important classification of wars, according to whether such object is limited or unlimited.

(1) War with limited object ("limited war") is where we merely seek to take from the enemy some particular part of his possessions, or interests; e.g., Spanish-American War, where the object was the liberation of Cuba.

(2) War with an unlimited object is where we seek to overthrow the enemy completely, so that to save himself from destruction he must agree to do our will (become subservient); e.g., Franco-German War.

NOTE.—Ulterior objects are not necessarily the same in their nature as the immediate (primary or secondary) objects which lead up to them; e.g., ulterior objects may be offensive, while one or more of the immediate objects may be defensive, and vice versâ.

EXAMPLE 1.—Japanese position in the late war. Ulterior object of the war (to drive Russians from Manchuria) was offensive (positive). Function or ulterior object of the fleet (to cover the invasion) was defensive (negative). Its primary object to effect this was to attack and destroy the Russian naval force. This was offensive (positive).

EXAMPLE 2.—In the Spanish-American War the ulterior object of the war was (for the Americans) to eject the Spanish Government from Cuba. This was offensive. The ulterior object of the fleet was to prevent the Spaniards sending reinforcements or interfering with the intended American invasion. This was defensive. The primary object of the fleet was to bring the Spanish Fleet to action. This was offensive.

SYSTEM OF OPERATIONS

Having determined the nature of the war by the nature of its object (i.e., whether it is offensive or defensive and whether it is limited or unlimited), strategy has to decide on the system of operations or "plan of the war."

This depends upon:—

(1) The theatre of the war.

(2) The means at our disposal.

1. Theatre of the War.—Usually defined as "all the territory upon which the hostile parties may assail each other." This is insufficient. For an island power the theatre of war will always include sea areas. Truer definition: "geographical areas within which lie the ulterior objects of the war and the subordinate objects that lead up to them."

A "theatre of war" may contain several "theatres of operations."

2. Theatre of Operations.—Is generally used of the operations of one belligerent only.

An "operation" is any considerable strategical undertaking.

A "theatre of operations" is usually defined as embracing all the territory we seek to take possession of or to defend.

A truer definition is, "the area, whether of sea or land or both, within which the enemy must be overpowered before we can secure the object of the particular operation."

Consequently, since the nature of the war varies with the object, it may be defensive in one theatre of operations and offensive in another.

Where the operations are defensive in character any special movement or movements may be offensive.

OBJECTIVE

Objective

An objective is "any point or force against which an offensive movement is directed." Thus where the object in any theatre of operation is to get command of a certain sea in which the enemy maintains a fleet, that fleet will usually be the objective.

LINES OF OPERATION

Lines of operation.

A line of operation is "the area of land or sea through which we operate from our base or starting point to reach our objectives."

Lines of operation may be exterior or interior. We are said to hold the interior lines when we hold such a position, in regard to a theatre of operations, that we can reach its chief objective points, or forces, more quickly than the enemy can move to their defence or assistance. Such a position is called an interior position. "Exterior Lines" and "Exterior Position" are the converse of these.

LINES OF COMMUNICATION

Lines of communication.

This expression is used of three different things:—

(1) Lines of supply, running from the base of operations to the point which the operating force has reached.

(2) Lines of lateral communication by which several forces engaged in one theatre of operations can communicate with each other and move to each other's support.

(3) Lines of retreat, which are lines of supply reversed, i.e., leading back to the base.

These three ideas are best described by the term "lines of passage and communication," which we had in use at the end of the eighteenth century.

Ashore, lines of passage and communication are roads, railways, waterways, &c.

At sea, they may be regarded as those waters over which passes the normal course of vessels proceeding from the base to the objective or the force to be supplied.

In Land Strategy the great majority of problems are problems of communication. Maritime Strategy has never been regarded as hinging on communications, but probably it does so even more than Land Strategy, as will appear from a consideration of maritime communications, and the extent to which they are the main preoccupation of Naval operations.

MARITIME COMMUNICATIONS

The various kinds of Maritime Communications for or against which a fleet may have to operate are:—

(1) Its own communications, or those of its adversary (which correspond to the communications of armies operating ashore). These tend to increase in importance strategically with the increasing hunger of modern fleets (for coal, ammunition, &c).

(2) The communications of an army operating from an advanced oversea base, that is communication between the advanced and the main base.

(3) Trade Routes, that is the communications upon which depend the national resources and the supply of the main bases, as well as the "lateral" or connecting communications between various parts of belligerents' possessions.

N.B.—Such "lines of passage and communication" are the preoccupation of Naval Strategy; that is to say, problems of Naval Strategy can be reduced to terms of "passage and communication" and this is probably the best method of solving them.

NAVAL STRATEGY CONSIDERED AS A QUESTION OF PASSAGE AND COMMUNICATION

By "Naval Strategy" we mean the art of conducting the operations of the Fleet. Such operations must always have for their object "passage and communication"; that is, the Fleet is mainly occupied in guarding our own communications and seizing those of the enemy.

PROOF I.—Deductive.—We say the aim of Naval Strategy is to get command of the sea. What does this mean? It is something quite different from the Military idea of occupying territory, for the sea cannot be the subject of political dominion or ownership. We cannot subsist upon it (like an army on conquered territory), nor can we exclude neutrals from it. Admiral Colomb's theory of "conquest of water territory," therefore, involves a false analogy, and is not safe as the basis of a strategical system. What then is the value of the sea in the political system of the world? Its value is as a means of communication between States and parts of States. Therefore the "command of the sea" means the control of communications in which the belligerents are adversely concerned.

COROLLARY.—The command of the sea can never be, like the conquest of territory, the ulterior object of a war, unless it be a purely maritime war, as were approximately our wars with the Dutch in the 17th century, but it may be a primary or immediate object, and even the ulterior object of particular operations.

PROOF II.—Inductive, from history or past experience.—History shows that the actual functions of the Fleet (except in purely maritime wars) have been threefold.