Whatever it was, it did wack the Israelis Special Forces.
From an American point of view, those are all fanatical Japanese willing to die for their Emperor. They have been waiting years for offensive forces to come into their field of fire.
The Japanese did the same thing on various Pacific Islands, and we knocked their lights out.
A hole is a hole is a hole. And the Islamic fascists who dug them will meet the same fate as the Japanese fascists did.