On this weekend, when we honor those brave service members who gave their lives for the cause of liberty, for the cause of our country, we should take a moment to remember that not all fell in battle. Those who gave their all in other incidents – training accidents, for example – made their sacrifice for our nation as well. 

Now, the fate of 19 U.S. Navy sailors who perished after a collision at sea in 1917 is a little better understood, as divers have found their last resting place, the undersea grave of the submarine USS F-1.

The huge Navy vessel was discovered off the coast of California after being lost during a training accident in 1917.

It was spotted in sand next to a training aircraft that had crashed into the sea in an unrelated incident in 1950.

Researchers released incredible images of the sunken vehicles after finding them using advanced underwater technology and expert divers.

The F-3 tore a massive hole in her sister ship’s port side, causing the F-1 to sink in just ten seconds, the Submarine Force Library and Museum Association says.

Nineteen out of its 24-man crew were unable to escape, going down with the vessel as it sank to the seafloor.

These men gave their lives for America, even if they didn’t fall in the Great War we were engaged in at the time. We should remember them and respect their sacrifice.