Sitting 5,000 meters below the surface, the colors are still vibrant. The outlines are crisp. A few rust streaks have crept ...

The USS Lionfish was commissioned in 1944 and earned one battle star for service in World War II. It sank a Japanese submarine, rescued the crew of a B-29 bomber, and served as a training submarine.

Diesel engines cannot work without oxygen, so how do diesel submarines operate when they're underwater? Their propulsion system accounts for this limitation.

France is moving to tie its nuclear deterrent strategy more closely with European allies while keeping full control over any strike decision.

The West Asia conflict expanded to include Iran-backed militias on Monday with an attack by Hezbollah on Israel. Israel ...

During World War II, the USS Pampanito prowled the Pacific as a deadly predator, surviving torpedo ambushes, destroying enemy ships, and rescuing stranded prisoners of war in some of the ocean’s most ...

Israel's military said it had begun a "broad wave of strikes" in Tehran on Wednesday morning. U.S. officials touted early ...

Defense Secretary Pete Hegseth has warned 'we're just getting started' in Iran as he announced the US has taken total control ...

This video features rare World War II footage of a Japanese submarine crew operating at sea. Submarines played a significant role in Pacific naval strategy, carrying out reconnaissance missions, ...

Remarkable spread of Iran war in days. You now have attacks not just in the Gulf & Israel, but also Cyprus & Turkey in the ...

"An Iranian warship thought it was safe in international waters,” Hegseth said. "Instead, it was sunk by a torpedo." ...

The Pentagon has confirmed that, as part of its operation with Israel, a US submarine sank an Iranian warship in the Indian Ocean.