The General's Class

A General from a fantasy world who longed for peace had his soul swapped with a high school teacher that was on the verge of killing his ungrateful students who were all trouble children. The General desides to whip the children into shape, and help each of them realize their potential. With all the knowledge that he needed left to him by the body's previous owner paired with his own knowledge, it should have been an easy task, but for the General it would he his magnum opes and he wasn't about to do things half way.
It should be easy enough, but things aren't always so simple.