Flank

Definition and stakes

Anonymous,  Lectures on Land Warfare; A tactical Manual for the Use of Infantry Officers

“ The flank is the most vulnerable part of a moving column, and an attack driven home upon that part has every prospect of success, for it will be delivered by a force that is distributed in depth against a force that is protracted in width after changing front to meet the attack, and the absence of depth in the defending force will deprive the defence of the principal source of strength in resisting attack. ”
Source: Gutenberg

William Duane,  A military dictionary

“ To Flank, in fortification, is to erect a battery which may play upon an enemy’s works on the right or left without being exposed to his line of fire. Any fortification, which has no defence but right forward, is faulty; and to make it complete, one part ought to flank the other.
To Flank, in evolutions, to take such a position in action as either to assist your own troops, or to annoy those of your enemy by attacking either of his flanks, without exposing yourself to all his fire.
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Source: Gutenberg

W. Balck,  Tactics, Volume 1 (of 2). Introduction and Formal Tactics of Infantry

“ The importance of flank attacks, even those in which the defender is subdued by the flanking fire of mounted troops, is specially mentioned, but, in this connection, it is emphasized that it is immaterial whether the attack is finally directed against the front or a flank of the enemy. The holding attack is to be carried out with energy in front to prevent the enemy from drawing reinforcements to other points. ”
Source: Gutenberg

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