It is ironic that Walter de la Mare wrote this poem, referring to World War I ("The war to end all wars"), in 1938 - just one year before the next great conflict.
PEACE
Night is o'er England, and the winds are still;
Jasmine and honeysuckle steep the air;
Softly the stars that are all Europe's fill
Her heaven-wide dark with radiancy fair;
That shadowed moon now waxing in the west
Stirs not a rumour in her tranquil seas;
Mysterious sleep has lulled her heart to rest,
Deep even as theirs beneath her churchyard trees.
Secure, serene; dumb now the night-hawk's threat;
The guns' low thunder drumming o'er the tide;
The anguish pulsing in her stricken side....
All is at peace....But, never, heart, forget:
For this her youngest, best, and bravest died,
These bright dews once were mixed with bloody sweat.
From 'Memory and Other Poems' (1938)
It would be ironic that this was written in 1938 if it were true. In actual fact it was published in 1918, in Motley and Other poems, Walter de la Mare