The missing Star is for the glaring omission of the 'War Poets': He had his reasons; however, in a way I feel not to have included any WW1 Poem was a slight on all Britons (inc. Irish of both faiths that stood for the colours): Yeats was displaying an all too 'irish' attitude toward an experience of conflict in which a good many Irish men and women found themselves rooting for Berlin's cohorts against the 'English/British' (an attitude Dublin repeated in WW2!).
The poems selected are on the whole an excellent representation of the era: There is particular joy and resonance still to be found in the voyage through Wilde's evocative verses as there is with Hardy, Chesterton, Eliot, and the inimitable C.E. Lewis.
E.g. 'Can the mole take,
A census of the stars...
So, I, perhaps,
Am neither mole nor mantis;
I see the constellations,
But by their gaps.'

Although for myself the singular poem which takes me by the hand and heart is from the mind of Oliver St. John Gogarty: Non Dolet

Our friends go with us as we go
Down the long path where Beauty wends,
Where all we love foregathers, so
Why should we fear to join our friends?

Who would survive them to outlast
His children; to outwear his fame---
Left when the Triumph has gone past---
To win from Age, not Time, a name?

Then do not shudder at the knife
That Death's indifferent hand drives home,
But with the Strivers leave the Strife,
Nor, after Caesar, skulk in Rome. ( )

I have only dipped into the collection itself, but I very much liked the introduction in which Yeats tells how Oliver Golightly, during the Irish Civil War, leaped into the Liffey in a hail of bullets and promised the river that if he survived, he would give it two swans --he survived and Yeats was present when Golightly kept his promise. ( )