What are some of the intriguing military mysteries explored in Season 1 Episode 4 of the “The Proof Is Out There: Military Mysteries TV series”?

Some of the intriguing military mysteries explored in Season 1 Episode 4 of "The Proof Is Out There: Military Mysteries" include: 1. A Korean soldier captured during D-Day fighting for the Nazis. 2. The secret weapon used by U.S. Navy Seals to kill Osama Bin Laden. 3. A classified military base in Greenland holding Nazi secrets. 4. A strange weapon from the USSR.