cuz Nazi German did help us a lot before our war with Japan.The list included the best weapon (such as fsh 155mm cannon,98K rifle,M35 helmet,Pak38 anti-tank cannon and ant-icraft cannon)we ever had,and Nazi government sent a band of military consultant to train our army.All of those helped us a lot in later war with Japan.That's why we don't hate the Third Reich as much as western guys do.