You're probably thinking of "Big Bertha", the German cannon which bombarded Paris from 75 miles away. More formally they were called the "Paris Guns". The "Big Bertha" nickname was from the daughter of Krupp, the German industrialist who built the guns.
big bertha
Wolfgang Fleischer has written: 'Heavy 24 cm Cannon development and action, 1916-1945' -- subject(s): Armed Forces, Artillery, Artillery operations, German, Artillery, Field and mountain, Field and mountain Artillery, German Artillery operations, History, World War, 1914-1918, World War, 1939-1945 'Das letzte Jahr der Waffen-SS' -- subject(s): Campaigns, History, Waffen-SS, World War, 1939-1945 'Die Heeresversuchsstelle Kummersdorf' -- subject(s): History, Proving grounds, Weapons systems, Testing, Armed Forces 'German motorized artillery and Panzer artillery in World War II' -- subject(s): Artillery, Artillery operations, German, German Artillery operations, Germany, Germany. Heer, History, World War, 1939-1945 'Military vehicles of the Reichswehr' -- subject(s): Equipment, Germany, Germany. Heer, History, Military Vehicles, Vehicles, Military 'Das Kriegsende in Sachsen 1945' -- subject(s): World War, 1939-1945, History
BMW
Artillery and machines guns caused armies to stay in defensive positions
America help provided heavy artillery for war and other war equipments.
The most common one that was used as a weapon in World War 1 is called the Artillery
The artillery cap badge with a wreath, crossed cannons, and German crown was typically used by the German military during World War I. The design varied slightly between different branches of the German artillery, but generally, it featured a wreath surrounding crossed cannons with a crown on top.
Coast-watchers , radar , anti-aircraft artillery and aircraft as interceptors .
The size of the German army was other 25 million strong.
All sides in WW1 used artillery.
The World War I zeppelins were large blimps used to gain information from over enemy lines, but were slow and easy targets for artillery guns.
An " artillery barrage" was the term
it is not a math term, an MG-42 was a heavy German machine gun during world war two.