35.5 cm Haubitze M1

The 35.5 cm Haubitze M1 was a German siege howitzer. It was developed by Rheinmetall before World War II to meet the German Army's request for a super-heavy howitzer. Eight were produced between 1939 and 1944. It saw service in the Battle of France and spent the rest of the war on the Eastern Front, saw action in Operation Barbarossa, the Siege of Sevastopol, the Siege of Leningrad and helped to put down the Warsaw Uprising in 1944.

35.5 cm Haubitze M1
Class Vehicle
Type Towed Artillery
Manufacturer Rheinmetall
Origin Germany
Country Name Origin Year
Germany 1939
Country Name Operational Year Retirement Year
Germany 1939 1945 View
ManufacturerName Production From Production To Quantity
Rheinmetall 1939 8 View

During the Battle of France one howitzer equipped Super-Heavy Artillery Battery (schwerster Artillerie-Batterie) 810 under the command of I Corps, Army Group B. It bombarded Belgian fortifications of the PFL I Line after the fall of Fort Eben-Emael on the first day of the battle. The battery was absorbed by Heavy Artillery Battalion 641 as its first battery on 27 July 1940 and it fought with that battalion on the Eastern Front during Operation Barbarossa where it initially was assigned to the 9th Army, Army Group Center. In 1942 it participated in the assault on Sevastopol under the command of 11th Army of Army Group South. It accompanied that army north to Leningrad during the summer of 1942 so that it could participate in the Siege of Leningrad. Soviet efforts to relieve the siege frustrated several German attempts to consolidate their positions there, but the battalion remained there through the beginning of 1944. It participated in the German efforts to suppress the Warsaw Uprising in August—September 1944.

Strangely, no more than one howitzer can be identified in service at any one time even though five were delivered in 1942 and a few others in the following years.

Type Super-Heavy Siege Howitzer
Place of origin Germany
Service history
In service 1939–45
Used by Nazi Germany
Wars World War II
Production history
Designer Rheinmetall
Designed 1936–39
Manufacturer Rheinmetall
Produced 1939–44
Number built 8
Weight 75 tonnes (74 long tons; 83 short tons)
Barrel length 8.05 metres (317 in)
Shell separate-loading, case charge
Shell weight 575 kilograms (1,268 lb)
Caliber 356 millimetres (14.0 in)
Breech horizontal sliding-block
Recoil hydro-pneumatic
Carriage box
Elevation +45° to 75° (firing)
Traverse 6° (on carriage)
360° (on platform)
Rate of fire 1 round per 4 minutes
Muzzle velocity 570 metres per second (1,900 ft/s)
Maximum firing range 20,850 metres (22,800 yd)
Filling TNT and wax
Filling weight 7.94 kilograms (17.5 lb)

End notes