Tommy Watkins

 was a soldier in the Battle of Spion Kop in the Second Boer War. He was killed in action and his coat made his way to an antique where Jo Grant's friend Rody Fletcher was possessed by it.

The First Doctor, Dodo Chaplet and Steven Taylor met him during the war, where he was inhabited by an alien being, Kali Carash. (AUDIO: Tales from the Vault)