The German army issued requirements in the early 1920s for a 15 cm howitzer. Development started in 1927 by Rheinmetall-Börsig and was approved for service in 1933. They were issued to infantry battalions starting in 1936.
It was a short barreled gun set on a box trailed carriage. Early production had steel wheels with metal rims for use with horses. The rims were later replaced with rubber for towing by motorized vehicles.
Some complaints were that it was too heavy as a large team of horses had to be used to tow it. Once it was in place it was also hard to get it ready to move out.
Often the sIG 33 was towed by horses, but trucks and half tracks were used when available.
For use against strong points a muzzle loaded stick bomb, the Stielgranate 42, was used. It has a short rage.
|15 cm sIG 33|
149.1 mm, 150 mm
|Length of gun||4' 4.9", 5' 5"
|Length of bore|
|Weight in action||3,858 lb
|Elevation||0° to +73°|
|Range of shell||5,140 yards
|Shell weight||HE: 83.8 lb
HE: 38 kg