Full form of NDA exam (Did You Know)
The National Defence Academy (NDA) is the Academy of common services of the armed forces of India, where cadets of the three services, the Army, Navy and Air Force together form before traveling to before begin training in their respective service academies. The NDA is Khadakwasla near Pune, Maharashtra. It is the first tri-services academy in the world.
NES student led and fought in every major conflict in which the armed forces of India was called to action since the academy was established. 3 students Vir Chakra recipients and 9 Param Ashoka Chakra recipients included. National Defence Academy has produced 27 service staff heads to date. Current Staff chiefs of the Army, Navy and Air Force are all former NDA. 
In 1941, Lord Linlithgow, then Governor General of India has received a grant of £ 100,000 from a Government of Sudan grateful to build a memorial in recognition of the sacrifices of Indian troops in the liberation of Sudan in the country East Africa during the Second World war. At the end of the war, Marshal Claude Auchinleck, then Commander in Chief of the Indian Army, based on the experiences of the army during the war, led a committee to study various military academies worldwide and reported the Government of India in December 1946, the committee recommended the creation of a joint military service academy, modeled on a US military Academy at West point training. 
After independence of India in August 1947, the Staff Committee leaders immediately implemented the recommendations of Auchinleck. The committee has launched an action plan at the end of 1947 to order a permanent defense academy and began searching for a suitable location. It also decided to create an intermediate training academy, known as mixed services Ala (JSW), which was commissioned on 1 January 1949 at the Academy of Armed Forces (now known as the Military Academy of India) in Dehradun. Initially, after two years of training at JSW, the cadets went to the military wing of the AFA for two years of training pre-commission, while the cadets of the Navy and Air Force were sent to Dartmouth and Cranwell UK for further education.
After the partition, the share of monetary gift received from Sudan to India amounted to £ 70,000 (£ 30,000 the rest went to Pakistan). The Indian Army has decided to use these funds to cover part of the cost of construction of the NDA. The first stone of the academy was laid by the Prime Minister of India, Jawaharlal Nehru, 6 October 1949. The National Defence Academy was formally commissioned December 7, 1954, with an opening ceremony 16 January 1955.  the JSW program was moved from the IMA to the NDA.