Three of four U.S. Army soldiers were found dead in Lithuania a week after their armored vehicle sunk into a peat bog. What is a bog? What to know

The U.S. soldiers had been at the center of a recovery mission in Lithuania for nearly a week after their armored vehicle sank in a body of water.

The bodies of three of four U.S. Army soldiers missing after their armed vehicle was found submerged in a bog in Lithuania last week have been recovered, the Army announced Monday.