80cm Schwerer Gustav Shell, Daniel Perez Sutil

What was the biggest naval cannon of World War II? What was the biggest land-based cannon of World War II? - Quora

In WW2, how big of a cannon would need to be built in Dover to be able to shell Dunkirk? Would it have been possible and/or practical? - Quora

World War II Weapons That Didn't Work - 24/7 Wall St.

World War II Weapons That Didn't Work - 24/7 Wall St.

World War II Weapons That Didn't Work - 24/7 Wall St.

Was the 20mm Oerlikon cannon ever used on USN PT Boats during WW2, and were they effective? - Quora

What are some interesting facts about World War 1 artillery? - Quora

How powerful was the cannon on the M3 Chaffe? - Quora

In WWI & WWII, the 37mm was popular and the caliber was used by all sides with various versions including direct fire guns as well as light howitzer artillery types. How was

Was the K 5 Glatt Railway cannon and Peenemünder Pfeilgeschoss used in combat in WWII? - Quora

Was the K 5 Glatt Railway cannon and Peenemünder Pfeilgeschoss used in combat in WWII? - Quora

10 Wunderwaffe, or 'Miracle weapons', that Nazis could have used to win WW2 – History Totally Naked