Double envelopment is a military term that refers to a tactic that involves surrounding an enemy force on both flanks. This tactic is often used to achieve a decisive victory by isolating the enemy and cutting off their retreat. There are several synonyms for the term double envelopment, including pincer movement, flank attack, scissors movement, and encirclement. Each term describes a tactic that involves attacking an enemy from more than one direction. Regardless of the specific term used, the goal is always to overwhelm the enemy and achieve a tactical advantage on the field of battle.