Norman Baker

Major Baker was Head of Security at the Wenley Moor nuclear research facility.

While Baker was in the Wenley Moor cave system, he saw a Silurian and fired upon it. A dinosaur then attacked him and he was wounded. Baker was rescued and taken to a hospital. He was unwilling to sit back and wanted to get into the action.

Baker refused to listen to the Third Doctor's advice and attacked the Silurians. They later captured him and infected him with a deadly virus to spread among humanity. He eventually succumbed to the disease, collapsing and dying outside Wenley Hospital just as the Doctor and Brigadier Lethbridge-Stewart arrived. The Doctor saw that his face was covered in lesions while Baker's doctor came rushing out to see what had happened. The Brigadier withdrew his gun to distance the hospital staff from touching Baker and spreading the plague, warning them that this was an alien disease they could not cure, which left UNIT with the task of quarantining the body. (TV: Doctor Who and the Silurians)

Behind the scenes
In the novelisation, Major Baker is renamed "Barker".