I have no personal experience of war, but every time I hear “age shall not weary them” it touches me. There’s something haunting about the lines and their being followed by the Last Post.
The Ode of Remembrance draws from a longer First World War poem called For the Fallen, by Laurence Binyon and, while often you only hear the 4th stanza, I like it when you hear the 3rd and 4th:
They went with songs to the battle, they were young.
Straight of limb, true of eye, steady and aglow.
They were staunch to the end against odds uncounted,
They fell with their faces to the foe.
They shall grow not old, as we that are left grow old:
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning,
We will remember them.