The Research & Development Establishment, Engineering (R&DE) was established in Pune in 1962 by amalgamating parts of the Technical Development Establishment, Vehicles (Ahmednagar) and the Inspectorate of Engineering Stores (Calcutta). The R&DE serves as a "nodal establishment for meeting the requirement of advanced technology equipment for army engineers." R&DE undertakes research and development in the areas of combat engineering equipment, fluid power based systems, mechatronics, computer aided engineering, NBC protective shelters, environmental chambers, and applications of composites. The R&DE has developed several ground systems for DRDO's Integrated Guided Missile Development Program. These include "mobile and static launchers, propellant systems, power supply systems, HP pneumatic systems, and electro-hydraulic servo control systems." R&DE has also helped in the development and validation of the tractor-cum-transporter for the 700km-range single-stage Agni-1 missile.

Sources:
[1] "Research & Development Establishment," Defence Research & Development Organisation, www.drdo.org;
[2] "Address Book," Defence Research & Development Organisation, www.drdo.org;
[3] T.S. Subramaniam, "The significance of Agni-I," Frontline, Volume 19-Issue 03, www.frontlineonnet.com.