 IOFS officers are Gazetted (Group A) defence-civilian officers under the Ministry of Defence.IOFS is a multi-disciplinary composite cadre consisting of technical – engineers (civil, electrical, mechanical, electronics), technologists (aerospace, automotive, marine, industrial/product design, computer, nuclear, optical, chemical, metallurgical, textile, leather) and non-technical/administrative (science, law, commerce, management and arts graduates).Technical posts comprise about 87% of the total cadre.