"Well the causality lists for 1914 - 18 will answer that for you."
Over which "normal men" had no control whatever (unless they followed the Russian example and pissed of home.
Dissenton and disobedience were serious crimes and carried extreme penalties
Jim Carroll

"When acting as a sentinel on active service sleeping at his post -        Death
By discharging firearms negligently occasioning false alarms in camp         - Cashiering or imprisonment
Causing a mutiny in the forces, or endeavouring to persuade persons in HM forces to join in a mutiny - Death
Striking his superior officer - Death
Offering violence or using threatening language to his superior officer - Penal servitude
Disobeying in such a manner as to show a wilful defiance of authority, a lawful command given personally by his superior officer - Death
Disobeying a lawful command given by his superior officer - Penal servitude
When concerned in a quarrel, refusing to obey an officer who ordered him into arrest        - Cashiering
Striking a person in whose custody he was placed - Cashiering or imprisonment
Deserting HM service, or attempting to desert - Death"