During the Great War, British men and boys as young as 17 arrived in France and were faced by this:
Some of them ended up like this (this is not a video for the faint of heart.)
Others broke down, dropped their rifles, did not acknowledge orders, or fled. 306 of those British men were convicted of desertion and cowardice, and shot at dawn.
Not until 2006 were the men pardoned.
This is the background of Justice Hall.