35mm GDF-002/GDF-005

The Oerlikon 35 mm twin cannon is a towed anti-aircraft gun system developed in the late 1950s, with the GDF-005 being a modernized variant introduced in the mid-1980s. It is widely used by numerous countries for air defense against aircraft, helicopters, and cruise missiles.

Designed by Oerlikon Contraves to counter the post-WWII threat of fast, low-flying jet aircraft, this system was engineered to provide a high rate of fire and extreme precision compared to legacy World War II-era anti-aircraft guns. The GDF-002 variant entered service in 1980 featuring upgraded digital data receivers, while the GDF-005 followed in 1985, introducing the computerized "Gun King" fire control system and an automatic ammunition reloader. The system saw significant combat deployment during the 1982 Falklands War, where Argentine forces utilized it effectively against British Harrier jets, and it was also deployed extensively by Iran during the Iran-Iraq War. Today, the GDF series remains a global benchmark for short-range air defense, serving over 30 nations and forming the ballistic basis for the Flakpanzer Gepard and modern Skyguard air defense shields.