Imperial Japanese Army, Kill All Prisoners Order
“ However, at such time as the situation become urgent and if it be extremely important, the POWs will be concentrated and confined in their present location and under heavy guard the preparation for the final solution will be made. The time and method of this disposition are as follows: (1) The Time. Although the basic aim is to act under superior orders, individual disposition may be made in the following circumstances: (a) When an uprising of large numbers cannot be suppressed without the use of firearms. ”
