Early life and military careerEdit
Lethbridge-Stewart was born in 1930, an only child. He was raised in Simla, India until the age of eight, which he was sent to an English prep school; his mother died after he left for England. He attended Holborough, where he first met Teddy Fitzoliver.
The young Alistair suffered a lot of pressure to live up to the military traditions of the Lethbridge-Stewart family.
He began his military career around 1953 and attended Sandhurst Military Academy with Major General Rutlidge. He was noted for having high ambitions even then. Shortly after the end of the Second World War, a 21-year-old Alastair was assigned to a Royal Navy mission to update British maps of the Greek Islands, and also ended up in Albania in a mission against Stalinist rebels. This was his first encounter with the extra-normal, as he came into contact with the Immortals and went on a quest into the Greek Underworld; his mind would be wiped of these memories.
He later joined the Scots Guards and was stationed for a time at Aldgate.
He lost his virginity to a girl named Vera whilst drunk on the night of his passing out as a fully commissioned second lieutenant.
While in Greece, a young Lethbridge-Stewart fell in love with the Immortal Persephone. He went into the Underworld and fought against Hades for her, and they spent two weeks together before she reluctantly wiped his memory. They would meet again in the 1970s, which saw his memory restored.
In Sierra Leone, Lethbridge-Stewart met Mariatu, the daughter of a chieftan, who bore a son by him, Mariama.
Some time in the 1960s, eleven years before the spider invasion, he had a romantic encounter with Doris on Brighton Beach; they had a relation of unknown length, which ended peacefully when Lethbridge-Stewart was dispatched overseas.
Upon returning to Britain, the Brigadier met and married Fiona. Fiona and Alistair had one child together, conceived following the London Event, who they named Kate.
Formation of UNITEdit
The then-Colonel Lethbridge-Stewart was the second commander of the British Army forces during the Great Intelligence's assault on London, replacing the deceased Colonel Pemberton. He was the sole survivor of a Robot Yeti assault at Holborn before heading down to the London Underground to take command. Here, for the first time, Lethbridge-Stewart met the strange little man known as the Doctor. Lehtbridge-Stewart showed a quick, decisive manner, and a ready acceptance of events, even believing the story about the TARDIS from the start.
Shortly after the London Event, Lethbridge-Stewart had a meeting with Air Vice-Marshall "Chunky" Gilmore and learned from him of the Shoreditch Incident, in which hostile aliens had visited Earth in 1963, which Gilmore himself had helped to fight off, with the help of the Doctor. He also learned that evidence of alien visits to Earth existed which went back millennia.
The Colonel went to the government and pitched the idea of a permanent military intelligence group with rapid-reaction capabilities, which would investigate alien and other unusual phenomena which might threaten the security of the nation. When this was turned down, he risked his career by petitioning the United Nations to form such a group instead. UNIT was soon formed, and Lethbridge-Stewart found himself appointed head of the United Kingdom branch and elevated to the rank of Brigadier. This action made him unpopular with many senior-ranking British officers.
The UNIT YearsEdit
Four years after the Yeti invasion, UNIT was investigating the mysterious activities of electronics industrialist Tobias Vaughn. Vaughn was allied with the Cybermen in one of the earliest of their many attempts to invade and conquer Earth. With the assistance of the Doctor, the Brigadier and his men were able to thwart this invasion attempt.
When the 2nd Doctor was forced to begin his 3rd regeneration and was exiled to 20th century Earth by the Time Lords, the Brigadier took on the new Doctor as UK UNIT's scientific advisor.
The new Doctor and the Brigadier lacked the easy rapport that they had enjoyed during the Doctor's previous incarnation. Their relationship was further strained after Lethbridge-Stewart set off explosive charges around the Wenley Moor Silurian colony after promising the Doctor that he had no hostile intentions towards them. The Doctor considered this action murder, if not genocide.
During a second encounter with the Silurians, the Brigadier's marriage to Fiona began to fail.
This relationship lasted through the Doctor's next regeneration and even after the Time Lords' rescinding of the Doctor's exile.The Brigadier relied on the Doctor's scientific and technical expertise to defeat various alien and domestic threats. The Doctor's formal ties with UNIT gradually waned, all the more so in his fourth incarnation, though he did leave with the Brigadier a space-time telegraph which the Brigadier could contact him if needed. Despite this, he was openly resentful when the Brigadier proceeded to use said device to summon him back to Earth.
Lethbridge-Stewart retired from UNIT and the military, taking a post as an A-level maths teacher at Brendon Public School. In 1977, the Brigadier saw and touched hands with his own future self from 1983. The time differential shorted out, causing an energy discharge - the Brigadier fell unconscious and Lethbridge-Stewart spent the next six years in a state of partial amnesia, having forgotten ever having met the Doctor. In 1983 the Brigadier encountered the Doctor, whom he did not recognize, met his past self from 1977 and in so doing completed the original temporal paradox.
Later, Brigadier was attending an anniversary reunion of UNIT when, along with the second Doctor, he was captured and transported to the Death Zone on Gallifrey.
In 1989, Lethbridge-Stewart conducted an investigation of the dealings of SenéNet and was captured. He was later rescued by the Doctor, who uncovered and stopped yet another invasion attempt by the Nestene Consciousness.
By the late 1990s, Lethbridge-Stewart married his second wife, Doris, with whom he had that memorable holiday years ago. The Doctor changed time to a minor extent so that he could attend the wedding, even though originally he had missed it because he had known of it.
The Brigadier worked with UNIT again during yet another attempt by the Great Intelligence to conquer Earth, together with two of the Doctor's former companions, Victoria Waterfield and Sarah Jane Smith. He reunited with his estranged daughter, Kate and for the first time met his grandson, Gordon.
The Brigadier would come out of retirement briefly to help UNIT and its new commander, Brigadier Winifred Bambera, deal with an invasion from a parallel universe by the sorceress Morgaine. Once again, he met up with the Doctor, now in his seventh incarnation and together defeated Morgaine. Lethbridge-Stewart distinguished himself during these events, singlehandedly taking on the Destroyer and dispatching him, armed only with a revolver loaded with silver bullets.
In 1997 the Brigadier collaborated with the Doctor's eighth incarnation and Bernice Summerfield during an interplanetary crisis between the United Kingdom and Mars. At the end of the Martian crisis, Lethbridge-Stewart was promoted to the rank of General, although he still preferred to be called "Brigadier." Later, he was also knighted. He would later go on to have a role in Scotland's devolution.
In 1999 he enlisted the help of the Fifth Doctor and his companions Tegan and Turlough to stop an invasion of Earth by the Jex.
During one part of this decade, Lethbridge-Stewart served as an undercover operative for the United Nations; while officially using his experience in devolution to advise the newly-formed state of Malebogia in the USA, he was secretly investigating the use of a medical device that could be used to alter human minds. During this time he encountered the Doctor again.
At a point probably in the 2000s, the Brigadier led a UNIT fleet from the dark side of the Moon against a Canisian fleet.
While teaching at Sandhurst Military School, the Brigadier met the Doctor in yet another incarnation.
Lethbridge-Stewart was knighted. He continued his association with UNIT and with Sarah Jane Smith. The Brigadier formally announced the true purpose of UNIT at a press conference without first telling anyone he would do so beforehand. He would end up assisting UNIT and its agent Colonel Emily Chaudhry against their attempted replacements ICIS, first by undermining their reasons for replacing UNIT in front of the media and eventually with direct military action.
During the attempted Sontaran invasion of Earth in 2009, Colonel Mace mentioned that Sir Alistair was stranded in Peru. Shortly afterwards, Sarah Jane Smith wanted his help to break into the Black Archive a UNIT base which housed artifacts of great danger and power. He did so but was interrupted in his brief with Cal Kilburne. He helped Sarah Jane and Rani Chandra to smuggle themselves into the Archive to get the Tunguska Scroll for the Bane called Mrs Wormwood who claimed she wanted it for honourable purpose. As he escaped with Sarah Jane he was chased by UNIT officers. He would've attended the wedding of Sarah Jane, but for some reason, he was back in Peru.
In 2010, along with Doris, Mike Yates and Benton, he attended the wedding of the Doctor's former companion, Bernice Summerfield to Jason Kane in Cheldon Bonniface. He had learned by this time that he had a terminal illness and had only weeks (at most) to live. As ever, danger and adventure ensued in the Doctor's footsteps and following a series of events, though, he had his youth restored to him and the disease rid from his system.
Later, during a boat outing with Doris, Lethbridge-Stewart's boat capsized and Doris was drowned, an event which haunted him for years. In 2012, the Brigadier met the Doctor in Avalon where they got caught up in struggles between that realm's ruler, Queen Mab, and the Unseelie Court.
With his life extended, Lethbridge-Stewart managed to live on considerably past the normal span for Humans of his time, dying at last sometime in the 2050s.