The Caterpillar D7 crawler and bulldozer from World War 2

This truly stunning diorama and build of the Caterpillar D 7 Crawler and bulldozer and how it helped during World War 2 helping the Allies change the outcome after D-Day by building new airfields, allowing the allied bombers and fighters attack the retreating German army repeating the same action of building new bases and airfields over and over again