The Howitzer artillery cannon would be placed where the cockpit traditionally was located on the Huey. A small, glass dome pod where the pilot normally sat was to be installed beside the cannon ...

The D-74 122mm field gun was first introduced in 1955 when it entered service alongside the D-20 152mm guns and the M-46 130mm guns. This design differs from the older M1931 (A-19) model mainly by ...