80cm Schwerer Gustav Shell, Daniel Perez Sutil

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

How did artillery evolve during the period from World War 1 to World War 2? - Quora

With the amount of artillery shells fired by both sides during both World Wars, were there any instances where the shells collided in the air? - Quora

How effective were railway artillery guns when used during both World Wars? - Quora

With the amount of artillery shells fired by both sides during both World Wars, were there any instances where the shells collided in the air? - Quora

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

Some WWII fighter planes were armed with 'cannons.' What kind of bullet did the cannons shoot? What kind of damage could it do? - Quora

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

How has artillery's use changed throughout the 20th century? - Quora

With the amount of artillery shells fired by both sides during both World Wars, were there any instances where the shells collided in the air? - Quora

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

Was the 'M9 Elevation Quadrant' used on a 105mm field cannon in WWII? - Quora

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