Falconet (cannon) - Wikipedia

Cannon - Wikipedia

Did medieval castles have any cannons? - Quora

If I built a castle on a big rock surrounded by a 100 meter hot lava moat, can any army in history get to me before guns and cannons were invented? - Quora

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How many cannons did a Spanish Galleon carry for defense/offense? - Quora

Cannon - Wikipedia

History of cannons - Wikipedia

Artillery - Wikipedia

How effective is modern infantry at capturing a castle without fire nor tank support? - Quora

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How could medieval castles defend themselves against siege cannons? - Quora