21st century Martian invasion of Earth

An invasion of Earth was attempted by the Ice Warriors in the 21st century. (TV: The Seeds of Death)
During his trial, the Second Doctor recalled via a Thought Channel the Ice Warriors' invasion of Earth as one of the "evils" he had broken the Time Lord code of non-interference to fight. (TV: The War Games)
The Keller Machine used the Third Doctor's memory of Slaar to attack him. (TV: The Mind of Evil)
Category:Conflicts
Category:Human conflicts
Category:Martian conflicts