Soldiers in various armies share some similar traditions: not only do people risk injury or death retrieving wounded comrades; they even do it to recover the bodies of dead comrades, so that the body can be sent back to the family.<p>Finland was unusual in the context of WWII that all bodies of dead soldiers were retrieved if at all possible, and sent back home, not just buried at a local military graveyard. This diving thing (Finnish divers in a Norwegian cave) has echoes of the same.