It's interesting to compare Owen's and Brooke's poetry (and even Sassoon's). Owen had lived through it all from '15 to '18, with some detours, and probably even as a patriot saw war for what it was. Brooke never really got that dose of realism; putting out his jingoistic cant until dying in 1915, before even seeing a war. Owen was a better poet, Brooke appealed to schoolboys.