The ‘cannon’ fitted to the B-25 was a 75mm! 😮

Many years ago I saw some footage of one of those cannons being fired during a low level flight. It was filmed from behind the cockpit crew of a Mitchell. When the cannon was fired you saw the crew thumping forward as a result from the recoil, like they were in a car that goes over a speed bump. There was a smoke trail visible. The impact of the projectile on the water caused an impressive big fountain.

Would like to see that footage again.

Tillerman.