We have four sets of prizes up for grabs, which is eight books in total, with four readers having the chance to win a copy of The Medieval Knight and Russian Tanks of WWII.
The prizes have been supplied thanks to the generosity of military book publisher, Amber Books.
The four competition winners will be drawn at random from those with the correct answer. All you have to do is answer the question correctly.
Closing date: 04/07/2020