Four days the earth was rent and torn
By bursting steel,
The houses fell about us;
Three nights we dared not sleep,
Sweating, and lisening for the imminent crash
Which meant our death
The fourth night every man,
Nerve-toutured, racked to exaustion,
Slept, muttering and twitching,
While the shells crashed over head.
The fifth day there came a hush
We left our holes
And looked above the wreckage of the earth
To where the white clouds moved in silent lines
Across the untroubled blue
~ Richard Aldington.
http://info.ox.ac.uk/departments/humanities/rose/battle.html