Also called the "Kaiser Wilhelm Geschütz" ("Emperor William Gun"), they were often confused with Big Bertha, the German howitzer used against Belgian forts in the Battle of Liège in 1914; indeed, the French called them by this name as well. They were also confused with the smaller "Langer Max" (Long Max) cannon, from which they were derived; although the famous Krupp-family artillery makers produced all these guns, the resemblance ended there.