Throw what stones you want but there would NOT be a Germany had the Allies decided to level it down to the last brick. The US with its mighty defense budget stopped that.
Surely as educated as you are you have heard of the Marshall Plan? It's easy for you to sit and to criticize from 4000 miles away. If you are so concerned about our debt, have your country repay the money spent enacting the reconstruction of your country. We could use it. Before interest in todays dollars, it's probably about $200 billion equivalent. Until that is settled, you can just remain quiet.