Designed by Böhler, the M18 ‘Feldkanone’ field gun was a mobile artillery piece firing a standard shell chambered in 76.5 x 233mm.

8 cm Feldkanone M 18
At the Heeresgeschichtliches Museum
Type	Field gun
Place of origin	Austria-Hungary
Service history
In service	1918-1945
Used by	Austria-Hungary Austria Hungary Nazi Germany Republic of China
Wars	World War I World War II
Production history
Designer	Böhler
Designed	1917-18
Manufacturer	Böhler
Specifications
Mass	1,478 kg (3,258 lb)
Barrel length	2.756 m (9.04 ft) L/33
Shell	Fixed 8 kg (18 lb) − Standard 76.5 x 233mm R Fixed 9.99 kg (22 lb) − prototype
Caliber	76.5 mm (3.01 in) − Standard 83.5 mm (3.29 in) − prototype
Recoil	Hydro-pneumatic
Carriage	Box trail
Maximum firing range	12,078 m (13,209 yd) − 83.5 mm prototype

Being Austro-Hungarian in origin— designed in 1917, the gun initially faced competition with Skoda, of which Böhler had taken the lead with its accuracy with the inclusion of a longer barrel, allowing for increased mission operation scale.^[1]

Despite the M18’s triumph, the M17 field gun continued to serve alongside its cousin during the two World Wars.

With an effective range of 10,500 meters (10.5km), an estimated rate of fire of 10-15 rounds per minute, and a projectile speed of 500m/s, the field gun found itself extensive use in trench warfare and artillery bombardment.

Its post-war service is unclear, serving in small numbers with the Austrian Army, with Germany not placing it into service following the Anschluss due to it using non-standard ammunition. A copy was also manufactured in China as the "Type 14 77mm" from 1925. The M 18 was also modified by the Hungarians for installation as the main armament in their indigenous 41M Turán tank.

The carriage of the M 18 had a bent axle which allowed the whole carriage to traverse, with it having a narrow set of wheels for mountain use. For transport it broke down into three pieces, to be carried on carts.