Technology Units and Operations. Not the best, but definitely the biggest and heaviest of the Tank destroyers built during the Second World War. These mammoth tanks were so big and heavy that it was problematic to transport them by railway in Germany. It wasn't just the biggest vehicle of the war, it also had the biggest gun with the greatest calibre. And its power to kill tanks would be great even on the modern battlefield. So why wasn't it successful? Why didn't they build more of them? How did it tick? What units used it? Were there any modifications on the model? This is the second release in our new Tech series.