A "Counteroffensive" is a military strategy used to respond to an enemy's offensive actions. It involves launching an attack to regain lost territory or to disrupt the enemy's advances. This tactic is often employed after a defensive position has been established, allowing forces to exploit weaknesses in the opponent's strategy. In history, counteroffensives have played crucial roles in various conflicts, such as World War II and the Vietnam War. Successful counteroffensives can shift the momentum of a battle, leading to significant changes in the overall outcome of a war. They require careful planning and coordination among troops and resources.