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Encirclement is a military term for the situation when a force or target is isolated and surrounded by enemy forces. [1] The situation is highly dangerous for the encircled force. At the strategic level, it cannot receive supplies or reinforcements, and on the tactical level, the units in the force can be subject to an attack from several sides. Lastly, since the force cannot retreat, unless it is relieved or can break out, it must fight to the death or surrender.
A special kind of encirclement is the siege. In that case, the encircled forces are enveloped in a fortified position in which long-lasting supplies and strong defences are in place, allowing them to withstand attacks. Sieges have taken place in almost all eras of warfare.
Encirclement has been used throughout the centuries by military leaders, including generals such as Spartacus, Alexander the Great, Julius Caesar, Genghis Khan, Khalid bin Waleed, Hannibal, Sun Tzu, Yi Sun Shin, Shaka Zulu, von Wallenstein, Nader Shah, Napoleon, von Moltke, Heinz Guderian, von Rundstedt, von Manstein, Zhukov, Patton and Soleimani.
Sun Tzu and other military thinkers suggest that an army should be not completely encircled but instead given some room for escape. Otherwise, the "encircled" army's men will lift their morale and fight to the death. It is better to have them consider the possibility of a retreat. [2] Once the enemy retreats, it can be pursued and captured or destroyed with far less risk to the pursuing forces than a fight to the death.
The main form of encircling, the "double pincer", is executed by attacks on the flanks of a battle whose mobile forces of the era, such as light infantry, cavalry, tanks, or armoured personnel carriers attempt to force a breakthrough to utilize their speed to join behind the back of the enemy force and complete the "ring" while the main enemy force is stalled by probing attacks. The encirclement of the German Sixth Army in the Battle of Stalingrad in 1942 is a typical example. During the Winter War, Finland used "pocket tactics" against the Soviet Union, called motti ; in the context of war, motti describes a tactic that the Finns used to immobilise, segment, surround and destroy the Soviet troops that were many times as large as them. [3]
If there is a natural obstacle, such as ocean or mountains on one side of the battlefield, only one pincer is needed ("single pincer"), because the function of the second arm is taken over by the natural obstacle. [4] The German attack into the lowlands of France in 1940 is a typical example of this.
A third and rare type of encirclement can ensue from a breakthrough in an area of the enemy front, and exploiting that with mobile forces, diverging in two or more directions behind the enemy line. Full encirclement rarely follows, but the threat of it severely hampers the defender's options. This type of attack pattern is centerpiece to blitzkrieg operations. Because of the extreme difficulty of this operation, it cannot be executed unless the offensive force has a vast superiority, either in technology, organization, or sheer numbers. The Barbarossa campaign of 1941 saw some examples.
The danger to the encircling force is that it is, itself, cut off from its logistical base; if the encircled force is able to stand firm, or maintain a supply route, the encircling force can be thrown into confusion (for example, Rommel's "Dash to the Wire" in 1941 and the Demyansk Pocket in 1942) or be comprehensively destroyed (as during the Burma campaign, in 1944).
Some examples of battles of encirclement are listed below.
Blitzkrieg is a word used to describe a combined arms surprise attack using a rapid, overwhelming force concentration that may consist of armored and motorized or mechanized infantry formations; together with artillery, air assault, and close air support; with intent to break through the opponent's lines of defense, dislocate the defenders, unbalance the enemies by making it difficult to respond to the continuously changing front, and defeat them in a decisive Vernichtungsschlacht: a battle of annihilation.
The pincer movement, or double envelopment, is a military maneuver in which forces simultaneously attack both flanks (sides) of an enemy formation. This classic maneuver has been important throughout the history of warfare.
Attrition warfare is a military strategy consisting of belligerent attempts to win a war by wearing down the enemy to the point of collapse through continuous losses in personnel, materiel and morale. The word attrition comes from the Latin root atterere, meaning "to rub against", similar to the "grinding down" of the opponent's forces in attrition warfare.
A salient, also known as a bulge, is a battlefield feature that projects into enemy territory. The salient is surrounded by the enemy on multiple sides, making the troops occupying the salient vulnerable. The opponent's front line that borders a salient is referred to as a re-entrant – that is, an angle pointing inwards. A deep salient is vulnerable to being "pinched off" through the base, and this will result in a pocket in which the forces in the salient become isolated and without a supply line. On the other hand, a breakout of the forces within the salient through its tip can threaten the rear areas of the opposing forces outside it, leaving them open to an attack from behind.
Operation Winter Storm, a German offensive in December 1942 during World War II, involved the German 4th Panzer Army failing to break the Soviet encirclement of the German 6th Army during the Battle of Stalingrad.
A pocket is a group of combat forces that have been isolated by opposing forces from their logistical base and other friendly forces. In mobile warfare, such as blitzkrieg, salients were more likely to be cut off into pockets, which became the focus of battles of annihilation.
A counterattack is a tactic employed in response to an attack, with the term originating in "war games". The general objective is to negate or thwart the advantage gained by the enemy during attack, while the specific objectives typically seek to regain lost ground or destroy the attacking enemy.
Maneuver warfare, or manoeuvre warfare, is a military strategy which emphasizes movement, initiative and surprise to achieve a position of advantage. Maneuver seeks to inflict losses indirectly by envelopment, encirclement and disruption, while minimizing the need to engage in frontal combat. In contrast to attrition warfare where strength tends to be applied against strength, maneuver warfare attempts to apply strength against weakness in order to accomplish the mission.
The 9th Army was a World War II field army. It was activated on 15 May 1940 with General Johannes Blaskowitz in command.
The Hungarian Third Army was a field army in the Royal Hungarian Army that saw action during World War II.
A breakout is a military operation to end a situation of investment by offensive operations that achieve a breakthrough—escape from offensive confinement. It is used in contexts such as this: "The British breakout attempt from Normandy". It is one of four possible outcomes of investment, the others being relief, surrender, or reduction.
The 4th Panzer Army, operating as Panzer Group 4 from its formation on 15 February 1941 to 1 January 1942, was a German panzer formation during World War II. As a key armoured component of the Wehrmacht, the army took part in the crucial battles of the German-Soviet war of 1941–45, including Operation Barbarossa, the Battle of Moscow, the Battle of Stalingrad, the Battle of Kursk, and the 1943 Battle of Kiev.
The Demyansk Pocket was the name given to the pocket of German troops encircled by the Red Army around Demyansk, south of Leningrad, during World War II's Eastern Front. The pocket existed mainly from 8 February to 21 April 1942.
The Northwestern Front was a military formation of the Red Army during the Winter War and World War II. It was operational with the 7th and 13th Armies during the Winter War. It was re-created on 22 June 1941, the first day of the Eastern Front on the basis of the Baltic Special Military District. On 22 June the Front consisted of the 8th, 11th, and 27th Armies, as well as the 5th Airborne Corps and the headquarters of the 65th Rifle Corps.
In military tactics, a flanking maneuver is a movement of an armed force around an enemy force's side, or flank, to achieve an advantageous position over it. Flanking is useful because a force's fighting strength is typically concentrated in its front, therefore, to circumvent an opposing force's front and attack its flank is to concentrate one's own offense in the area where the enemy is least able to concentrate defense.
Envelopment is the military tactic of seizing objectives in the enemy's rear with the goal of destroying specific enemy forces and denying them the ability to withdraw. Rather than attacking an enemy head-on, as in a frontal assault, an envelopment seeks to exploit the enemy's flanks, attacking them from multiple directions and avoiding where their defenses are strongest. A successful envelopment lessens the number of casualties suffered by the attacker while inducing a psychological shock on the defender and improving the chances to destroy them. An envelopment will consist of one or more enveloping forces, which attacks the enemy's flank(s), and a fixing force, which attacks the enemy's front and "fixes" them in place so that they cannot withdraw or shift their focus on the enveloping forces. While a successful tactic, there are risks involved with performing an envelopment. The enveloping force can become overextended and cut off from friendly forces by an enemy counterattack, or the enemy can counterattack against the fixing force.
The 24th Infantry Division was a German Army infantry division active in World War II. It served across the Eastern Front in engagements such as the Sieges of Sevastopol and the Leningrad, finally being destroyed in the Courland Pocket in 1945.
In military tactics, a flanking maneuver, or flanking manoeuvre, 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.
Encirclement operations are operations where one force loses its freedom of maneuver because an opposing force is able to isolate it by controlling all ground lines of communication and reinforcement.
However, they can occur in situations where the attacking commander uses a major obstacle, such as a shoreline, as a second encircling force.