{"id":70906,"date":"2022-08-31T20:25:25","date_gmt":"2022-08-31T20:25:25","guid":{"rendered":"https:\/\/one.sightlinemg.com\/navytimes\/uncategorized\/2022\/08\/31\/this-wwii-bunker-used-a-fake-air-vent-to-return-grenade-to-sender\/"},"modified":"2026-08-08T14:06:41","modified_gmt":"2026-08-08T14:06:41","slug":"this-wwii-bunker-used-a-fake-air-vent-to-return-grenade-to-sender","status":"publish","type":"post","link":"https:\/\/one.sightlinemg.com\/navytimes\/off-duty\/2022\/08\/31\/this-wwii-bunker-used-a-fake-air-vent-to-return-grenade-to-sender\/","title":{"rendered":"This WWII bunker used a fake air vent to return grenade to sender"},"content":{"rendered":"\n

Warfare became infinitely more gruesome during World War II thanks to some rather incredible advances in technology. But a very deadly trick deployed by the builders of a bunker in Normandy used nothing more than the art of misdirection \u2014 quite literally.<\/p>\n\n\n\n

A hole, disguised as an air vent, would seem the perfect place for an advancing enemy to pop a grenade. However, the tosser would come to regret that when the explosive simply dropped through a small pipe and fell out at the assailant\u2019s feet.<\/p>\n\n\n\n

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A post shared by Normandy Bunkers (@normandybunkers)<\/a><\/p><\/div><\/blockquote>