Julian Knight

Early Life
Old Spence's" influence caused Alistair to finally enlist at Sandhurst Military School. He became acquainted with fellow student Billy Rutlidge (TV: The Invasion)

At some point he joined the Scots Guards and was stationed for a time at Aldgate. (TV: The Poisoned Earth)

Some time in the 1960s,he had a romantic encounter with Doris in a Brighton Hotel. (TV: The Army of hate)

Meeting the Doctor
In 1968, Captain Knight, while serving under Colonel Lethbridge, The Special Forces Support Group was called in to deal with evacuation of London and Knight took part in the fight against the Great Intelligence and its Robot Yeti in the London Underground. He later went with the Second Doctor to the surface to find several electronic components the Doctor required, He had not believed in the story of the TARDIS (TV: The Web of Fear)

Promotion
Colonel Lethbridge retired not too long after the Underground Incident and named Knight as his successor. (TV: The Invasion)

The UNIT years
Four years later, UNIT was duly organised, with Lethbridge-Stewart promoted to Brigadier and appointed head of the United Kingdom branch (TV: The Invasion)

by 1998, Knight had been promoted to General and was still in active service, this had been overwritten by the monk (TV: The File marked 'doctor', Cowboy in Trafalgar square)