railway gun M65 atomic cannon V-3 cannon Paris Gun Project Babylon References Notes Bibliography German Artillery of World War Two, Ian V. Hogg. Further reading External links Internet archive of transportation and firing images Internet archive copy of panzerlexikon.de video of Dora loading and firing Internet archive copy of panzerlexikon.de video of Dora Internet archive copy of website with additional information Image of Hitler looking at the Gustav Railway gun World War II artillery of Germany 800 mm artillery Siege artillery Individual cannons Railway guns Weapons and ammunition introduced in 1941