The Thousand Day War took place between 2086 and 2088. It began with an attempted Martian invasion of Earth in the form of a blitzkrieg attempt at areoforming. The first day of the human counteroffensive saw the United Nations Third Tactical Response Brigade — comprised mostly of Irish and Ethiopians — under the command of Brigadier Yembe Lethbridge-Stewart drop onto Olympus Mons. They suffered heavy casualties on the way in.