Engineer Rob Bell explores the new inventions - from giant troop-carrying gliders to tanks that could operate on water - that made the Normandy invasion in 1944 possible. Show more
Discover 11,128,835 listings and 277,884 playable programmes from the BBC
Engineer Rob Bell explores the new inventions - from giant troop-carrying gliders to tanks that could operate on water - that made the Normandy invasion in 1944 possible. Show more