This is why, Gromit:
"The discovery and recovery of the Dornier is of national and international importance," said the museum's director general, Air Vice-Marshal Peter Dye.
"The aircraft is a unique and unprecedented survivor from the Battle of Britain and the Blitz [the intense bombing of London]."
The bomber was only discovered in 2008 when it was spotted by divers.
Work will now begin to conserve the Dornier and prepare it for display at the museum's London site.
Dye said the plane would provide an "evocative and moving exhibit" that would highlight the sacrifices made by young men from all sides.
Thankfully historians have a less blinkered view when it comes to preserving articles of history that are relevant to these Isles.
We had this discussion recently. I argued that IMHO the Dornier has the same historic significance as a Viking longboat, would there be one found in similar circumstances.
The era doesn't matter, it'll be viewed with the same significance by museum goers for decades to come.