Brother that's the story of most wars.
In the " war to end all wars " Australia, 416,809 men enlisted, 38.7 percent of the total male population aged between 18 and 44 at that time.
Nearly 59,000 died, 166,000 were wounded, nearly 5000 went missing or were made prisoner and nearly 90,000 suffered sickness.
I am willing to bet nearly all the survivors came back indelibly scarred from what they saw, and had to do.
All for what ?