Photos, for a change, from a 1917 war memoir by a Canadian private. Here's the opening few paragraphs for you:
"Well," said old Bill, "I know what war is...I've been through it with the Boers, and here's one chicken they'll not catch to go through this one."
Ken Mitchel stirred his cup of tea thoughtfully. "If I was old enough, boys," said he, "I'd go. Look at young Gordon McLellan; he's only seventeen and he's enlisted."
That got me. It was then that I made up my mind I was going whether it lasted three months, as they said it would, or five years, as I thought it would, knowing a little bit of the geography and history of the country we were up against.