Many difficulties have had to be surmounted. For instance it was found
that, in spite of training students, proceeding to the front showed
hesitation in the execution of non-combatants, and grew pale on first
hearing the cries of women and children. This difficulty is being
obviated by means of gramophone records taken in Belgium, which serve to
inure the novice to the sounds of anguish. By the time he proceeds to
the front no cries for mercy have any power to move him.