[5] Djajadiningrat began his formal education at the Carpentier Alting Stichting Nassau School (CAS), then proceeded to the Hogere Burgerschool (HBS) level in Batavia.

After completing his HBS, he then continued his education to Geneeskundige Hoogeschool te Batavia (GHS, Medical College) which during the Japanese occupation of the Dutch East Indies renamed Ika Daigaku.

[fn 1] However, after the Proclamation of Indonesian Independence he did not continue his studies at the Faculty of Medicine, but served as a member of the Ministry of Information and became an English broadcaster on Radio Republik Indonesia.

Three months after that Japan succeeded in occupying the Dutch East Indies, so the cadets who were conducting an officer's education were rushed to Colombo, Ceylon.

Djajadiningrat along with other cadets of the 1940 generation who were educated in Colombo and following onboard operations were later appointed to be KM (Koninklijk Marine) officers on March 1, 1943.

In connection with his departure, R. Subijakto appointed Djajadiningrat (then a Lieutenant colonel) as Vice Chief of Staff of the Navy in Yogyakarta.

34 Year 1968, his post as Director General of Demobilization Affairs was replaced by Arifin Syukur for his expertise as a diplomat was needed by the government.

20 / LPU / 1971 dated 8 October 1971, Djajadiningrat was appointed by Suharto to become a member of the People's Representative Council from the ABRI fraction of the Golkar.