In The Fourth Year Description:

Quote, "In the latter half of 1914 a few of us were writing that this war was a
"War of Ideas." A phrase, "The War to end War," got into circulation,
amidst much sceptical comment. It was a phrase powerful enough to sway
many men, essentially pacifists, towards taking an active part in the
war against German imperialism, but it was a phrase whose chief content
was its aspiration."