Diehl Defence GmbH & Co. KG is a German weapon manufacturer headquartered in ÃÂberlingen. It operates as a division of Diehl Stiftung and specializes in the production of missiles and ammunition.
Diehl BGT Defence was established in 2004 through the merger of Bodenseewerke Gerätetechnik GmbH and Diehl Munitionssysteme GmbH & Co. KG. In February 2017, Diehl BGT Defence and Diehl Defence Holding were integrated into Diehl Defence.
In 1960, Bodenseewerke Gerätetechnik became the lead contractor for producing the American Sidewinder AIM-9B air-to-air missile in Europe.
Building on the knowledge gained from the Sidewinder's infrared homing technology, Diehl Defence developed the seeker system for the IRIS-T short-range air-to-air missile. Introduced in 2005, the IRIS-T has been adopted by 13 countries as of October 2022.
A cooperation agreement worth , was signed on June 10, 2025, between Diehl Defence, and Reliance Defence to produce the Vulcano 155mm precision-guided munition system in India. Core technology and guidance system will be supplied by Diehl Defence, while Reliance Defence will act as the primary manufacturer. A greenfield facility will manufacture it at Ratnagiri's Watad Industrial Area. It is anticipated that the project will contribute to India's defence export target by 2029 and help the country's Aatmanirbhar Bharat vision by delivering over 50% indigenous content.