August Coenders (1890 — 1974) was a German engineer working for Stahlwerke Becker AG during

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

, where he built a 20 mm antiaircraft gun. In the 1930s, he worked for several years in the UK, and in Putaux, France as well as at Oerlikon, Switzerland. In 1936

Hermann Röchling Hermann Röchling (12 November 1872 – 24 August 1955) was a German steel manufacturer in the Saar (Germany) and Lorraine (France) in the 20th century. He was a paternalistic and well-liked employer, concerned about his workers' health and welfa ...

brought him to Wetzlar, Germany, where he worked at Röchling'sche Eisen und Stahlwerke GmbH during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

. Cönders designed the

Röchling shell Röchling shells were bunker buster, bunker-busting artillery shells, developed by German engineer August Coenders during World War II, based on the theory of increasing the sectional density to improve penetration. Description The Sub-caliber ...

that was tested in 1942 and 1943 against the Belgian Fort d'Aubin-Neufchâteau and the

V-3 cannon The V-3 () was a German World War II large-caliber gun working on the multi-charge principle whereby secondary propellant charges are fired to add velocity to a projectile. Two full-size guns were built in the underground Fortress of Mimoye ...

. Very little is known of his life after the V-3 project. He was involved in the development of several firearm designs:

submachine gun A submachine gun (SMG) is a magazine (firearms), magazine-fed automatic firearm, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to descri ...

, machine gun, Röchling ''Volksgewehr'' and ''Volkssturmkarabiner''.

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* * {{DEFAULTSORT:Conders, August Engineers from Saarland Weapon designers 1890 births 1974 deaths