In military tactics, a flanking maneuver, also called a flank attack, is an attack on the sides of an opposing force. If a flanking maneuver succeeds, the opposing force would be surrounded from two or more directions, which significantly reduces the maneuverability of the outflanked force and its ability to defend itself. A psychological advantage may also be present, as flank forces usually do not expect to be attacked.A larger scaled tactical flanking is called a strategic flanking, where the targets of the flanking could be as large as entire divisions.
The flanking maneuver is a basic military tactic, with several variations. Flanking an enemy often refers to staying back and not risking yourself, while at the same time gradually weakening enemy forces. Of course, it may not always work (especially if outnumbered), but for the most part can prove to be very useful as well as effective.
One type is employed in an ambush, where a friendly unit performs a surprise attack from a concealed position. Other units may be hidden to the sides of the ambush site to surround the enemy, but care must be taken in setting up fields of fire to avoid friendly fire.
Another type is used in the attack, where a unit encounters an enemy defensive position. Upon receiving fire from the enemy, the unit commander may decide to order a flank attack. A part of the attacking unit "fixes" the enemy with suppressive fire, preventing them from returning fire, retreating or changing position to meet the flank attack. The flanking force then advances to the enemy flank and attacks them at close range. Coordination to avoid friendly fire is also important in this situation.
The most effective form of flanking maneuver is the double envelopment, which involves simultaneous flank attacks on both sides of the enemy. A classic example is Hannibal's victory over the Roman armies at the Battle of Cannae. Another example of the double envelopment is Khalid ibn al-Walid's victory over the Persian Empire at the Battle of Walaja.
Despite primarily being associated with land warfare, flanking maneuvers have also used to great effect in naval battles. A famous example of this is the Battle of Salamis, where the combined naval forces of the Greek city-states managed to outflank the Persian navy and won a decisive victory.
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