The Siege of Vellore was an intermittent series of siege

Siege

A siege is a military blockade of a city or fortress with the intent of conquering by attrition or assault. The term derives from sedere, Latin for "to sit". Generally speaking, siege warfare is a form of constant, low intensity conflict characterized by one party holding a strong, static...

s and blockade

Blockade

A blockade is an effort to cut off food, supplies, war material or communications from a particular area by force, either in part or totally. A blockade should not be confused with an embargo or sanctions, which are legal barriers to trade, and is distinct from a siege in that a blockade is usually...

s conducted during the Second Anglo-Mysore War

Second Anglo-Mysore War

The Second Anglo-Mysore War was a conflict in Mughal India between the Sultanate of Mysore and the British East India Company. At the time, Mysore was a key French ally in India, and the Franco-British conflict raging on account of the American Revolutionary War helped spark Anglo-Mysorean...

 by forces of the Kingdom of Mysore

Kingdom of Mysore

The Kingdom of Mysore was a kingdom of southern India, traditionally believed to have been founded in 1399 in the vicinity of the modern city of Mysore. The kingdom, which was ruled by the Wodeyar family, initially served as a vassal state of the Vijayanagara Empire...

 against a British East India Company

British East India Company

The East India Company was an early English joint-stock company that was formed initially for pursuing trade with the East Indies, but that ended up trading mainly with the Indian subcontinent and China...

 garrison holding the fortress

Vellore Fort

Vellore Fort is a large 16th-century fort situated in Vellore city near Chennai, in the state of Tamil Nadu, India. The Fort was at one point of time the headquarters of the Vijayanagara Empire...

 at Vellore

Vellore

Vellore It is considered one of the oldest cities in South India and lies on the banks of the Palar river on the site of Vellore Fort. The city lies between Chennai and Bangalore and the Temple towns of Thiruvannamalai and Tirupati...

, located in the present-day Indian

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 state of Tamil Nadu

Tamil Nadu

Tamil Nadu is one of the 28 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian Peninsula and is bordered by the union territory of Pondicherry, and the states of Kerala, Karnataka, and Andhra Pradesh...

. First besieged in 1780, Mysore's ruler Hyder Ali

Hyder Ali

Hyder Ali was the de facto ruler of the Kingdom of Mysore in southern India. Born Hyder Naik, he distinguished himself militarily, eventually drawing the attention of Mysore's rulers...

eventually reduced the siege to a blockade due the need for troops elsewhere. The blockade was ineffectively maintained until 1782 before being abandoned; the British successfully resupplied the garrison of Colonel Ross Lang four times.