A giant German howitzer was powerless against the forts of Verdun

The Gamma-Gerät is a 420 mm German siege howitzer designed by Krupp to destroy reinforced concrete fortifications. Developed between 1906 and 1910 and produced in ten units, this massive armament required transport by rail. Despite this immense firepower, it quickly showed limitations against the large forts of Verdun which totally resisted its shells.