A pincer movement whereby the blue force doubly envelops the red force.
The pincer movement (double envelopment) is a basic element of military strategy which has been used, to some extent, in nearly every war. The maneuver is mostly self-explanatory; the flanks of the opponent are attacked simultaneously in a pinching motion after the opponent has advanced towards the center of an army which is responding by moving its outside forces to the enemy's flanks, in order to surround it. At the same time, a second layer of pincers attacks on the more extreme flanks, so as to prevent any attempts to reinforce the target unit.
Most infantry combat, on every scale, is based in some fashion on this military tactic and it is commonly used by aircraft as well. It was vaguely described in Sun Tzu's The Art of War, but he argued that it was best to allow the enemy a path to escape, as he felt the target army would fight with more ferocity when completely surrounded. However, the pincer is commonly employed in modern warfare.
A close envelopment is a flanking maneuver that strikes BLUFOR units in their flank or rear at a relatively shallow depth.
The goal of deep envelopment is either to attack the BLUFOR from the rear or to seize key-blocking positions thereby preventing the BLUFOR's withdrawal and ensuring its destruction.
Forces carrying out close, deep, or doubleenvelopments ordinarily maneuver in a march or prebattle formation when BLUFOR resistance is light enough not to require the use of battle formation.
Consisting of or involving two parts or components usually in pairs; "an egg with a double yolk"; "a double (binary) star"; "double doors"; "dual controls for pilot and copilot"; "duple (or double) time consists of two (or a multiple of two) beats to a measure".
To double the degree; "she was doubly rewarded"; "his eyes were double bright".
In baseball, a double is the act of a batter safely reaching second base by striking the ball and getting to second before being made out, without the benefit of a fielder's misplay (see error) or another runner being put out on a fielder's choice.