The Siege of Bangalore was a siege of the town and fortifications of Bangalore

Bangalore

Bengaluru , formerly called Bengaluru is the capital of the Indian state of Karnataka. Bangalore is nicknamed the Garden City and was once called a pensioner's paradise. Located on the Deccan Plateau in the south-eastern part of Karnataka, Bangalore is India's third most populous city and...

 during the Third Anglo-Mysore War

Third Anglo-Mysore War

The Third Anglo-Mysore War was a war in South India between the Sultanate of Mysore and the British East India Company and its allies, including the Mahratta Empire and the Nizam of Hyderabad...

 by forces of the 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...

, led by Charles, Earl Cornwallis

Charles Cornwallis, 1st Marquess Cornwallis

Charles Cornwallis, 1st Marquess Cornwallis KG , styled Viscount Brome between 1753 and 1762 and known as The Earl Cornwallis between 1762 and 1792, was a British Army officer and colonial administrator...

 against a Mysorean

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...

 garrison, while Tipu Sultan

Tipu Sultan

Tipu Sultan , also known as the Tiger of Mysore, was the de facto ruler of the Kingdom of Mysore. He was the son of Hyder Ali, at that time an officer in the Mysorean army, and his second wife, Fatima or Fakhr-un-Nissa...

, Mysore's ruler, harried the camps and positions of the besiegers. Arriving before the town on 5 February 1791, Cornwallis captured the town by assault on 7 February, and after six weeks of siege, stormed the fortress

Bangalore Fort

Bangalore Fort was originally built by Kempe Gowda a feudatory of the Vijaynagar Empire and the founder of Bangalore as a mud fort. It was converted into a stone fort by Haider Ali in 1761. It was a stronghold of Tipu Sultan that was captured by the army of the British East India Company led by...

 on 21 March.

The Bangalore fort, ca. 1791, was described as follows:
Tipu Sultan followed Cornwallis' army, placing him in the awkward position of having an undefeated enemy army at his back while besieging the a strong fortification. Tipu kept away hoping to take assault when underway in flank. Over the next twelve days, two companies of the Madras Pioneers

Madras Engineer Group

Madras Engineer Group are a regiment of the Corps of Engineers of the Indian Army. The Madras Sappers draw their origin from the erstwhile Madras Presidency army of the British Raj. This regiment has its HQ in Bangalore...

 provided sappes for eight batteries, dug several parallels and a trench up to the fort ditch. Cornwallis attacked secretly on the night of March 21st, 1791. The Madras Pioneers, led by Lt Colin Mackenzie

Colin Mackenzie

Colonel Colin Mackenzie was Surveyor General of India, and an art collector and orientalist.Mackenzie was born in Stornoway, Outer Hebrides, Scotland...

, crossed the ditch with scaling ladders, mounted the breach and entered the fort, while the artillery engaged the fort with blank ammunition. With a breach made, the main stormers rushed in and the fort was captured after a hand-to hand fight in which a thousand defenders were killed. Cornwallis captured the fort and secured the force against Tipu.

The Madras Pioneers, went on to make Bangalore their permanent home.