Author Michael Morpurgo hopes his new book will see the British army's first black officer finally get honoured.
A Medal for Leroy is based on the true story of Walter Tull, who fought in World War I.
He was a great officer who was recommended for a bravery medal, but never got it.
Morpurgo told Newsround: "People who fight for their country whatever their colour and have been recommended for a medal should get that medal."
The fighting of World War I officially ended in 1918 on the eleventh hour on the eleventh day of the eleventh month.
This Sunday is Remembrance Day, when people across the country will stop what they're doing and observe a two-minute silence to remember those who have lost their lives serving their country.
Morpurgo told us why it's important: "Every single time a soldier dies in Iraq or Afghanistan, the ache of it, the sadness of it goes on - that's why we have to remember."