Kenneth Baker's Faber Book of War Poetry is a hard act to follow; Hollander's not fazed. Both works are cunningly devised to keep monotony at bay (all that slaying!), Baker proceeding by categories, which are legion (Plunder and Spoils, Spying), Hollander broadly chronologically. To give you the flavour, we open with a bang (just read it) from Paradise Lost, which I'd never managed to get a fix on before, followed by David's Lament from 2:Samuel (if you don't know, it's the 'How are the mighty fallen' bit, and every schoolchild* should know it) followed in its turn, after Sennacherib (you know? 'The Assyrian came down like a wolf on the fold') and two bits of Tennyson's Iliad, by.. Edwin Muir! Beautifully put together, this is one to devour in an evening and leave you with much to ponder. Though three Thomas 'Ye Mariners of England' Campbells is probably two too many.
And while we're on the subject of war anthologies, I can't forbear to mention Daniel George's All in a Maze ('with some assistance', it says, from the then more marketable Rose Macaulay), published with great percipience in 1939. Now that really *will* last a lifetime! (See my review of his A Peck of Troubles.)
* though I note a problematic word in the second line that teachers will nowadays need to explicate - or defuse - BEFORE embarking on the poem