Operating the naval machine in war means practically operating the active fleet in such a way as to cause victories to occur, to cause the fleet to enter each battle under as favorable conditions as practicable, and to operate the other activities of the navy in such a way that the fleet will be efficiently and promptly supplied with all its needs. Strategy employs tactics and logistics to bring these things to pass; but this does not mean that strategy stands apart and simply gives logistics and tactics tasks to do. The three agencies are too mutually dependent for any such procedure and require for their successful working, both individually and together, the most thorough mutual understanding and support. _Flanking, T-ing, etc._--It being a fact that no nation can put a force upon the sea that is concentrated at one point; it being a fact that every naval force must be spread over a considerable area and made up of various parts, and that the efficacy of the various parts in exerting force upon a definite enemy depends on the unity of action of the various parts, it results that the most effective way in which to attack any naval force is not to attack all the parts at once, thus enabling all to reply, but to attack the force in such a way that all the parts cannot reply. If we attack a ship for instance, that can fire 10 guns on a broadside and only 4 guns ahead, it is clear that we can do better by attacking from ahead than from either side. Similarly, if 10 ships are in a column, steaming one behind the other, each ship being able to fire 10 guns from either side and only 4 ahead, the 10 ships can fire 100 guns on either side and only 4 ahead; and therefore it would be better to attack the column from ahead (to "T" it), than to attack it from either side. It is curious to note how widely this simple illustration can be made to apply to both strategy and tactics; how the effort of each is to dispose our force so toward the enemy's force that we can use our weapons more effectively than he can use his. An extreme illustration might be made by imagining 1,000 soldiers standing in line and unable to face except to the front; in which case it is clear that, no matter how perfectly they might be armed, or how quickly and accurately they could fire, one man standing on the flank, or behind them, could kill one soldier after the other, until all the 1,000 were killed, and be in no danger himself. In case of attacking a ship or a column of ships from ahead, or of attacking a line of soldiers on the flank, the effectiveness of the method of attack lies in the fact that a number of the weapons that are present in the force attacked cannot be used in reply. [Illustration: Fig. 1]