I had to do a paper on them many moons ago. They made the big honkin’ artillary that flattened the fortress of Liege and forced Belgium to surrender in WWI.
Ironically much of Russia’s artillary before WWI was made by them.
Big Bertha. Krupp cannons were a symbol of military prestige all over the world. Even Monaco bought an 88, although their country was so small they had nowhere to fire it.