www.greatwar.co.uk/poems/index.htm
In Flanders Fields by John McCrae is one that is often read
The story of Ellis Humphrey Evans is also a poignant one - he won the bardic chair of the National Eisteddfod six weeks after he was killed on 31 July 1917.
www.snowdoniaheritage.info/en/person/734/hedd-wyn/
Why must I live in this grim age,
When, to a far horizon, God
Has ebbed away, and man, with rage,
Now wields the sceptre and the rod?
Man raised his sword, once God had gone,
To slay his brother, and the roar
Of battlefields now casts upon
Our homes the shadow of the war.
The harps to which we sang are hung,
On willow boughs, and their refrain
Drowned by the anguish of the young
Whose blood is mingled with the rain.
Although that may not be suitable if there are young children present.