Battlefield was first broadcast in four weekly parts from September 6 to September 27, 1989. Features Sylvester McCoy 7th Doctor.
In response to a distress signal, the Seventh Doctor and Ace materialize the TARDIS near Lake Vortigern in England. The sound of explosions leads the TARDIS crew into the acquaintance of Brigadier Bambera of UNIT, in charge of a nuclear missile convoy. Following from the encounter, the retired Alistair Lethbridge-Stewart is informed of the Doctor's return, and a helicopter is sent to his country home to collect him, against the protests of his wife, Doris.