page_title: 42 cm Gamma Mörser
hierarchical_section_title: 42 cm Gamma Mörser
caption_attribution_description: Belgium. Photograph from left side of German 42 cm Gamma Mörser with crew.
context_page_description: The 42cm kurze Marinekanone L/12, or Gamma-Gerät, was a German siege gun built by Krupp. The Gamma-Gerät's barrel diameter was 42 cm, making it one of the largest artillery pieces ever fielded. It was designed from 1906 to 1910, then used by the Imperial German Army during World War I at various sieges and battles in Belgium, France, Poland, and Serbia. A single Gamma-Gerät survived World War I and saw limited use in World War II by the Wehrmacht to attack the Maginot Line and besiege Sevastopol.
  Due to its extreme weight, 150 metric tons, it was mostly immobile and had limited effectiveness on either the Western and Eastern Fronts of World War I. Only ten were built.
context_section_description: The 42cm kurze Marinekanone L/12, or Gamma-Gerät ("Gamma Device"), was a German siege gun built by Krupp. The Gamma-Gerät's barrel diameter was 42 cm (17 in), making it one of the largest artillery pieces ever fielded. It was designed from 1906 to 1910, then used by the Imperial German Army during World War I at various sieges and battles in Belgium, France, Poland, and Serbia. A single Gamma-Gerät survived World War I and saw limited use in World War II by the Wehrmacht to attack the Maginot Line and besiege Sevastopol. 
  Due to its extreme weight, 150 metric tons, it was mostly immobile and had limited effectiveness on either the Western and Eastern Fronts of World War I. Only ten were built.
caption: A Gamma-Gerät in 1914
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