In the early days of World War I, Germany unveiled a weapon - the mobile 42cm (16.5 inch) M-Gerat howitzer. This book details the design and development of German siege guns before and during World War I.
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In the early days of World War I, Germany unveiled a weapon - the mobile 42cm (16.5 inch) M-Gerat howitzer. This book details the design and development of German siege guns before and during World War I.
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