A line of communication (or communications) is the route that connects an operating

military unit Military organization or military organisation is the structuring of the armed forces of a State (polity), state so as to offer such military capability as a military policy, national defense policy may require. In some countries paramilitary ...

with its supply base. Supplies and reinforcements are transported along the line of communication. Therefore, a secure and open line of communication is vital for any military force to continue to operate effectively. Prior to the advent of the use of

telegraph Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas ...

and

radio Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transm ...

in warfare, lines of communication were also the routes used by despatch riders on horseback and runners to convey and deliver orders and battle updates to and from unit commanders and headquarters. Thus, a unit whose lines of communication were compromised was vulnerable to becoming isolated and defeated, as the means for requesting reinforcements and resupply is lost. The standard military abbreviation is LOC. There is also SLOC for sea line of communication, GLOC for ground line of communication, or ALOC for air line of communication. The interdiction of supplies and reinforcements to units closer to the front lines is therefore an important strategic goal for opposing forces. Some notable examples: * The

siege of Vicksburg The siege of Vicksburg (May 18 – July 4, 1863) was the final major military action in the Vicksburg campaign of the American Civil War. In a series of maneuvers, Union Maj. Gen. Ulysses S. Grant and his Army of the Tennessee crossed the Mi ...

in the American Civil War, in which Ulysses S. Grant encircled the city, leading to its eventual surrender in July 1863 * The

Battle of France The Battle of France (french: bataille de France) (10 May – 25 June 1940), also known as the Western Campaign ('), the French Campaign (german: Frankreichfeldzug, ) and the Fall of France, was the Nazi Germany, German invasion of French Third Rep ...

in World War II, in which the Germans cut off the French and British armies in Belgium (although the

Dunkirk evacuation The Dunkirk evacuation, codenamed Operation Dynamo and also known as the Miracle of Dunkirk, or just Dunkirk, was the evacuation of more than 338,000 Allied soldiers during the Second World War from the beaches and harbour of Dunkirk, in the n ...

rescued over 330,000 of them) * The encirclement of German 6th Army in the

Battle of Stalingrad The Battle of Stalingrad (23 August 19422 February 1943) was a major battle on the Eastern Front of World War II where Nazi Germany and its allies unsuccessfully fought the Soviet Union for control of the city of Stalingrad (later re ...

in World War II * United States attacks on the Ho Chi Minh trail during the

Vietnam War The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...

Notes

{{reflist A line of communication can also refer to a civilian management (corporations lines of communication)

References

Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print book ...

Military strategy

See also

Logistics in general

Specific logistics operations

Notes

References