Ellie Harrison presents a special remembrance edition of Countryfile looking back at places that have been shaped by war. She discovers how huge military insignia came to be carved into a Wiltshire hillside, before taking to the skies in a classic British warplane, the Tiger Moth.
Matt Baker heads to Sandhurst to see trainee officers being put through their paces. He then goes to Slapton Sands, where 70 years ago soldiers, sailors and airmen were training for D-day.
Adam Henson finds out about the secret role that land workers had in defending the country during the Second World War.
And Julia Bradbury travels to Wales to meet soldiers with a reputation for being some of the fiercest in the British Army.