The Rashtriya Swayamsevak Sangh (RSS), which is set to complete 100 years on Thursday, has come a long way since its inception to become the largest socio-cultural organisation.
Here is a timeline of key events that shaped the RSS' journey, including the various highs and lows:
Dr Keshav Baliram Hedgewar announced the launch of the Sangh on September 27.
The organisation got its name, the Rashtriya Swayamsevak Sangh, on April 17 after a majority of a small group of Hedgewar's followers voted in its favour out of a total of four proposed names.
First Nitya Shakha started at Mohitewada ground in Nagpur on May 28.
First special training camp with the name O.T.C. - officer's training camp - held in May with 17 participants
First ceremony of initiation, Pratignya, was conducted in March.