Rimcollians, the name by which alumni of the RIMC are usually denoted, have gone on to hold the highest ranks in the Army, Navy and the Air Force of India, Pakistan and Bangladesh.

The first concrete step towards Indianisation of the officer cadre came from Viceroy Lord Curzon, in his "Memorandum on Commissions for Indians" on 4 June 1900.

This Imperial Cadet Corps (ICC), popularly known in the Doon Valley as the Rajwada Camp, was the forerunner to the present day RIMC.

"The demand to Indianise the officer cadre grew more strong in the post World War I years, and finally resulted in the formation of the Military Requirements Committee by Lord Rawlinson, the commander-in-chief in 1921.

It was located on the premises of the Imperial Cadet Corps (also called Rajwada Camp), set amidst 55 hectares (140 acres) of lush-green countryside adjacent to the Garhi Village in Dehradun Cantonment.

Hira Lal Atal was the first Cadet Captain and later as Adjutant General of the Indian Army, He was responsible for designing India's highest award for bravery in combat, the Param Vir Chakra, of which the first recipient was another Old Boy of the college Maj Somnath Sharma.

To celebrate the 75th anniversary of Rashtriya Indian Military College, Dehra Dun (1922–1997) 2.00 "Cradle of Excellence" stamps were produced; The First Day Covers were issued on 13 March 1997.

The college celebrated its centenary on 13 March 2022, making it the oldest officer training institution of Indian Armed Forces.The school is spread over 54 hectares (139 acres) and has an enrollment of 250 cadets.

A Hawker Hunter jet aircraft gifted to the college by The Air Chief Marshal N.C. Suri is placed in front of the Cadet Mess.

Recently a Sea Harrier presented to RIMC by the navy was inaugurated by the CINCAN Bimal Verma.It is located in front of the Thimayya auditorium.

[6] Cadets at the RIMC follow the 10+2 pattern curriculum of Indian Central Board of Secondary Education (CBSE), New Delhi over the next five years.

Cadets sports include hockey, football, cricket, basketball, Volleyball, squash, boxing, swimming, athletics, tennis and gymnastics.

After the cadets complete the 12th grade, they graduate from the RIMC and most of them join the Indian Armed Forces by entering the National Defence Academy, Pune.

Rashtriya Indian Military college is administered by the Union Ministry of Defence, through the Army Training Command, Shimla.

RIMC (Limca Book of Records confirm) is perhaps the only institution in the country where exams for Class X and XII are conducted twice a year, in May and November.

A rare distinction of the RIMC is that some of its alumni have also headed the Armed Forces of Pakistan, a feat made possible by Rimcollians of the pre-partition Subcontinent era.

Sawai Maharaja Punya Pratap Singh Sahib Bahadur of Ajaigarh passed out from the same and was classmate of General GG Bewoor.

[8] The school has an alumni network called the Rimcollian Old Boys Association (ROBA), founded in 1949 by then Major General Hira Lal Atal.

At the General Body meeting, the millennium volume Coffee Table Book, ‘Cradle of Bravery’ was released by Dr NM ‘Appa’ Ghatate.

The book is fittingly authored by 26 Rimcollians and edited by Air Marshal PP Reddy (retd) and senior journalist Sidharth Mishra.

[10][11] Sports and games played at RIMC include boxing, football, cricket, athletics, horse riding, hockey, squash, swimming and shooting.

RIMC alumni Cdr Abhishek Kankan, NM ( Gallantry) (Retd) submitted Mt Everest on 19 May 2004 as part of record creating Indian Naval Expedition which was flagged off from a dived Submarine.

[12] Major Ashish Malik also represented India at the 2018 Asian games and won a team silver medal there The school is divided into four sections.