Gun-howitzer (also referred to as gun howitzer) is a type of artillery weapon that is intended to fulfill the roles of both an ordinary cannon or field gun, and of a howitzer.[1] It is thus able to convey both direct and indirect fire.[1] Modern gun-howitzers are usually identified just as howitzers.
To be able to serve as a howitzer, gun-howitzers are typically built to achieve at least 60° to 70° of elevation. For effective direct fire, the gun-howitzers typically employ a fairly long gun barrel, usually not shorter than 30 calibres. Also, its ammunition has a high muzzle velocity and is usually of large calibre (120 millimetres (4.72 in) or greater).[1]