Today’s invention is a way to provide even softskinned military vehicles with added protection from eg roadside bombs.
Each vehicle would carry several lightweight cages, one for each face. These would be attached to the vehicle via strong frames which would allow the cages to be angled downwards so they each act like the bucket of a bulldozer and are easily filled with earth/rocks by driving the vehicle for a short distance.
Once the vehicle has been driven fast or airlifted to a position of conflict, the cages would be filled rapidly, providing it effectively with several blastwalls behind which its crew could shelter.
On reaching a safer area, or when before making a quick getaway, the cages could be opened and their contents jettisoned in seconds.