The Mortaio da 210/8 D.S. was a siege howitzer which served with Italy during World War I and World War II. It was an old-fashioned weapon when introduced around 1900. It was mounted on a timber firing platform and lacked a recoil system of any kind. It was mounted on a De Stefano carriage which attempted to handle the weapon's recoil by mounting the weapon on a series of inclined ramps. The barrel and cradle had their own inclined ramp as did the carriage.