Can you really destroy a tank by putting a grenade under the tank’s wheels?

When they arrived at the gun, he realized the German soldiers were not angry, but were laughing. He looked at the gun. Yes, he had hit it, and there was damage and a couple of killed soldiers. But one of his 20mm cannon shells had gone down the barrel of one of the flak guns, exploded when it hit the breech (and possibly a shell in there already) and the breech of the gun had splayed out like a banana.

The German soldiers were congratulating him on his shooting, but they settled down and sent him off for processing as a downed allied airman, and he spent almost all the rest of the war in POW camp. He did escape near the end and made it to the Russians, and eventually back to England.