Canon de 274 modèle 87/93 Glissement - Wikipedia

Trivia: Gustav Max was based on Schwerer Gustav, the rail cannon made and used by the nazi germany, also considered the largest gun ever used in a war. : r/DuelLinks

Dora/Schwerer Gustav K. (E) Rail Gun, World War II Wiki

File:DoraSchwererGustav.jpg - Wikimedia Commons

Schwerer Gustav, Wiki

Heavy Gustav, World Conqueror 4 Wiki

SimplePlanes Schwerer Gustav

MilitaryHistoria - Schwerer Gustav was a German 80-centimetre

Landkreuzer P. 1000 Ratte - Wikipedia

24 cm Theodor Bruno Kanone (E) - Wikipedia

Large-calibre artillery - Wikiwand