Biggest Guns From 20th Century

Biggest Guns From 20th Century - Military humor

Sources:

https://en.wikipedia.org/wiki/Schwerer_Gustav

https://en.wikipedia.org/wiki/Little_David

https://en.wikipedia.org/wiki/BL_18_inch_railway_howitzer

https://en.wikipedia.org/wiki/2B1_Oka

https://en.wikipedia.org/wiki/Karl-Ger%C3%A4t

https://en.wikipedia.org/wiki/Paris_Gun

https://en.wikipedia.org/wiki/M65_Atomic_Cannon