, I think Brooke was a First World War poet (same vintage as Wilfred Owen), though I can't swear to that.

He was exactly that. Try the following for a very good anthology of most of the war poets, including some from Germany and Russia
SILKIN, Jon. The Penguin book of First World War poetry / edited and with
an introduction by Jon Silkin. London : Allen Lane, 1979
ISBN: 0713910917