91福利社

The idea that the number of horses exceeds the number of tanks in the British army is one that has been repeated over a number of years. Sometimes it has been used as a way to suggest that money is wasted on an animal that serves primarily a ceremonial purpose. While sometimes it is used as a way to argue more money needs to be spent on equipment such as tanks. But is it true? And what happens in other countries?

Presenter: Tim Harford and Hannah Sander
Producer: Charlotte McDonald

(image: Members of the King's Troop Royal Horse Artillery at Wellington Barracks in London, England. Credit: Oli Scarff / Getty images)