Military
18 events, 1800 to 2021; 2 marked as turning points.
1800
One year after Kattabomman was executed, a broad coalition of Tamil palayakkarars and their allies revolted against the East India Company.

1801
After a lengthy siege and heavy shelling, Colonel Agnew's Company troops took the rebuilt fort of Panchalankurichi.
1806
Indian sepoys of the Madras Army rose against the East India Company at Vellore Fort over new dress regulations.

1831
Madras Pioneers renamed the Madras Sappers and Miners
The Madras Pioneers, raised in 1780, were renamed the Corps of Madras Sappers and Miners in 1831.

1852
Wellington cantonment established in the Nilgiris
The military station of Jakkatalla in the Nilgiris was renamed Wellington and construction of its barracks began.

1858
Lawrence Asylum founded at Lovedale in the Nilgiris
A Lawrence military asylum for the children of British soldiers opened at Lovedale near Ooty; it became the Lawrence School.
1899
In and near Sivakasi, Maravar-Nadar clashes killed 22 people and burnt hundreds of houses until troops stepped in.
1914
German cruiser Emden shells Madras
Early in the First World War, the German light cruiser SMS Emden shelled Madras, setting fire to oil tanks in the harbour area.

1943
Lakshmi Swaminathan leads Rani of Jhansi Regiment
Madras-born doctor Lakshmi Swaminathan was appointed to lead the women's Rani of Jhansi Regiment of Subhas Chandra Bose's Indian National Army.

1946
Royal Indian Navy mutiny reaches Madras
A revolt by Indian ratings of the Royal Indian Navy that began in Bombay spread to ships and shore establishments including Madras.
1947
Defence Services Staff College re-established at Wellington
After Partition the Indian staff college was re-established at Wellington in the Nilgiris, replacing the Staff College at Quetta.

1955
Enfield India set up to build the Bullet in Madras
Enfield India was formed with Madras Motors to assemble the Royal Enfield Bullet motorcycle in Madras.

1961
Heavy Vehicles Factory set up at Avadi
Battle tanks became the business of the Heavy Vehicles Factory, which the Ordnance Factory Board set up at Avadi.

1987
Operation Poomalai: Indian airdrop over Jaffna
Indian Air Force transport planes dropped relief supplies over the besieged city of Jaffna, halting a Sri Lankan army offensive against the Tamil militants.
An accord between India and Sri Lanka on the Tamil issue led to the dispatch of the Indian Peace Keeping Force to the island.
1990
Indian Peace Keeping Force withdraws from Sri Lanka
In March 1990 the final contingents of the Indian Peace Keeping Force, deployed under the 1987 accord, departed from Sri Lanka.

1997
A. P. J. Abdul Kalam awarded the Bharat Ratna
A. P. J. Abdul Kalam, the Rameswaram-born scientist who headed India's missile programme, received the Bharat Ratna.

2021
Helicopter crash near Coonoor kills General Bipin Rawat
An Indian Air Force Mi-17V-5 crashed in the Nilgiris, killing Chief of Defence Staff Bipin Rawat, his wife and 12 others.
