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

military unit Military organization ( AE) or military organisation ( BE) is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. Formal military organization tends to use hiera ...

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 the

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 communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connec ...

in warfare, lines of communication were also the routes used by dispatch 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 destroyed, 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 in the American Civil War, in which

Ulysses S. Grant Ulysses S. Grant (born Hiram Ulysses Grant; April 27, 1822July 23, 1885) was the 18th president of the United States, serving from 1869 to 1877. In 1865, as Commanding General of the United States Army, commanding general, Grant led the Uni ...

encircled the city, leading to its eventual surrender in July 1863 * The

Battle of France The Battle of France (; 10 May – 25 June 1940), also known as the Western Campaign (), the French Campaign (, ) and the Fall of France, during the Second World War was the Nazi Germany, German invasion of the Low Countries (Belgium, Luxembour ...

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 ...

rescued over 330,000 of them) * The encirclement of German 6th Army in the Battle of Stalingrad in World War II * The United States' attacks on the

Ho Chi Minh trail The Ho Chi Minh Trail (), also called Annamite Range Trail () was a Military logistics, logistical network of roads and trails that ran from North Vietnam to South Vietnam through the kingdoms of Kingdom of Laos, Laos and Cambodia (1953–1970), ...

during the

Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...

References

{{reflist

See also

Logistics in general

Specific logistics operations

References

Further reading