Prince Harry laid a wreath at the grounds of Twickenham during an official visit for England's clash with South Africa.
The prince laid the wreath at the ground's commemorative rose and poppies gates, which was installed by the Rugby Football Union to remember those killed in the First World War.
There were 15 roses at the foot of the gates which are copies of those which appeared on the 1914 England shirt.
Harry, 32, was presented with a poppy made out of a First World War German artillery shell emblazoned with his name and military number by artist Harry Gray.
The prince, who is a former soldier, told the artist: "That is amazing, thank you very, very much."
The prince subsequently watched England beat South Africa from the royal box without his American girlfriend Meghan Markle, defying expectations that the actress would join him at the match.