Swiss fighter planes also shot down German planes that overflew their territory. I'm not sure what this has to do with the linked story, though. Regarding the

Swiss fighter planes also shot down German planes that overflew their territory. I'm not sure what this has to do with the linked story, though. Regarding the 20mm shells, German fighters had a 20mm cannon that fired through the propeller hub. These were not big bullets, but were packed with explosives [1]. The linked story seems a little bit "too good to be true". A tall tale. [1]https://en.wikipedia.org/wiki/Mine_shell_(projectile) https://en.wikipedia.org/wiki/Mine_shell_(projectile)