Let's not forget those shot at dawn for cowardice.
Private Thomas Highgate was the first to suffer such military justice. Unable to bear the carnage of 7,800 British troops at the Battle of Mons, he had fled and hidden in a barn. He was undefended at his trial because all his comrades from the Royal West Kents had been killed, injured or captured. Just 35 days into the war, Private Highgate was executed at the age of 17.
Many similar stories followed, among them that of 16-year-old Herbert Burden, who had lied that he was two years older so he could join the Northumberland Fusiliers. Ten months later, he was court-martialled for fleeing after seeing his friends massacred at the battlefield of Bellwarde Ridge. He faced the firing squad still officially too young to be in his regiment.
To their far-off generals, the soldiers' executions served a dual purpose - to punish the deserters and to dispel similar ideas in their comrades. Courts martial were anxious to make an example and those on trial could expect little support from medical officers. One such doctor later recalled, 'I went to the trial determined to give him no help, for I detest his type - I really hoped he would be shot.'
Those condemned to death usually had their sentences confirmed by Field Marshal Sir Douglas Haig on the evening following their court-martial. A chaplain was dispatched to spend the night in the cell with the condemned man and execution took place the following dawn, with some men facing their last moments drugged with morphine or alcohol.
When the time came, the offender was tied to a stake, a medical officer placed a piece of white cloth over the man's heart and a priest prayed for him. Then the firing line - usually made up of six soldiers - was given orders to shoot. One round was routinely blank and no soldier could be sure he had fired a fatal shot.
Immediately after the shooting, the medical officer would examine the man. If he was still alive, the officer in charge would finish him off with a revolver.
'So many of those who were executed were just boys,' argues Shot at Dawn campaign leader John Hipkin. 'They made no allowance for that. They and their families were let down. The whole issue was, and still is, a disgrace.'