Doctor Who: Flux performs a hefty rewrite on UNIT's origin, but does this Brigadier retcon solve the Fifth Doctor's infamous UNIT dating controversy? Debuting in 1968's Second Doctor episode «The Invasion,» UNIT quickly became part of Doctor Who DNA.
An Earth-based military force designed to combat extra-terrestrial activity (calling The Doctor, in other words), UNIT has been a reliable Doctor Who ally, ever-present across the decades and traditionally led by Nicholas Courtney's Brigadier
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