Springbok,
It is a poem called High Flight, by Pilot Officer John Gillespie McGee, RCAF.
I was proud to march past the Cenotaph in London today and, afterwards, walked through the gounds of Westminster Abbey, looking at all the poppy crosses lined up so beautifully. I was fortunate enough to see one bearing the name of a former squadron friend:

A hint of sadness, but many happy memories. The words of P.O. McGee are for you too Mick!
Thudders