Guard 1 (The Armageddon Factor)

From Tardis Wiki, the free Doctor Who reference

A guard served under the Marshal of Atrios.

He escorted Princess Astra to a hospital to visit Merak. He later received orders to go to K-Block to welcome soldiers home, and put Astra in a room to wait while he stood guard on the door. Unaware she was trapped, he was then shot and killed by the Marshal. His body was discovered by K9. (TV: The Armageddon Factor)