For many of the horribly disfigured young men who had been hit in the face after being pulled from the mud and squalor of the World War I trenches, their labels simply read GOK - God Only Knows.
One soldier, Sergeant Sidney Beldam (pictured), had a large portion of his nose torn off by a piece of shrapnel - so that his upper lip was permanently lifted in a snarl. But Gillies rescued his appearance.