Why did the japanese treat pows so badly?

In pre-WW2 Japanese culture, there existed a strict social hierarchy. One of the lowest things one could do in said hierarchy, is surrender. This was seen as dishonorable, and lowered one’s potion to lower than dogs. Any sign of disobedience and hesitation to the captor by the prisoner was seen as disrespectful, and accordingly.

i belive the classic sword and a shield would do

a woodchuck would chuck 12.5 wood : 3